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Manthey C, Cepon-Robins T, Warrener A. Hyperandrogenism associated with polycystic ovary syndrome may have a protective effect against fracture risk in female athletes: A pilot study. Am J Hum Biol 2024; 36:e24070. [PMID: 38488301 DOI: 10.1002/ajhb.24070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 08/03/2024] Open
Abstract
OBJECTIVES Polycystic ovary syndrome (PCOS), characterized by polycystic ovaries, anovulation, and hyperandrogenism, is believed to be an evolutionary mismatch disease. Past research has examined PCOS as a uniform disease, despite variation in phenotypes across diagnostic categories, but establishing an evolutionary mismatch requires a focus on individual traits. We suggest PCOS hyperandrogenism may have been beneficial in ancestral environments because it reduced fracture risk and associated morbidity and mortality due to increased bone mineral density (BMD). We test this hypothesis by assessing fracture frequency, a proxy for BMD, in highly active females with and without PCOS hyperandrogenism. METHODS Sixty-seven reproductive-aged women were surveyed and grouped as: high intensity interval training (HIIT; a proxy for metabolic and physical stress) athletes with hyperandrogenic PCOS (31.24%), HIIT athletes without PCOS (29.85%), and nonathletes with hyperandrogenic PCOS (38.81%). Fracture occurrence was compared between the groups using independent samples Kruskal-Wallis tests for non-normally distributed data, and multiple regression analysis was used to examine anthropometrics, lifestyle and reproductive factors, PCOS status, and exercise frequency on fracture occurrence. RESULTS Fracture occurrence was higher in non-PCOS athletes (3.8 ± 4.3) than PCOS-athletes (1.2 ± 1.4, p = .11) and PCOS-non-athletes (1.0 ± 1.4, p < .01). PCOS-athletes and nonathletes did not differ significantly in fracture occurrence (p = .33). These results were independent of factors associated with bone health. CONCLUSIONS These preliminary findings suggest females with PCOS-related hyperandrogenism may be less likely to experience bone fractures and provide an initial step to explaining why PCOS has persisted despite marked negative reproductive consequences in modern populations.
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Affiliation(s)
- Courtney Manthey
- The University of Colorado Colorado Springs, Colorado Springs, Colorado, USA
| | - Tara Cepon-Robins
- The University of Colorado Colorado Springs, Colorado Springs, Colorado, USA
| | - Anna Warrener
- The University of Colorado Denver, Denver, Colorado, USA
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Hudson M, Meyer J, Evans A, Krishna C, Smith ZA, Bakhsheshian J. Evaluating osteoporosis and bone quality in the aging spine: modern considerations for surgical management in the geriatric population. GeroScience 2024:10.1007/s11357-024-01171-7. [PMID: 38703277 DOI: 10.1007/s11357-024-01171-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 04/18/2024] [Indexed: 05/06/2024] Open
Abstract
Surgical management paradigms of spinal pathologies in the aging population carry inherent substantial risks, with surgical complications being more prevalent among patients with osteoporosis compared to those with normal bone mineral density. In this narrative review, we aim to highlight important clinical understanding and considerations in perioperative evaluation and management of patients elected to undergo spinal surgery. Osteoporosis is a well-defined risk factor for mechanical complications following spinal surgery, and as such, perioperative optimization of bone health in the setting of surgery for geriatric patients remains a critical research area alongside intraoperative surgical augmentation techniques. Surgical techniques to circumvent challenges with instrumentation of poor bone mineral density have included augmentation of pedicle screw fixation, including segmental bicortical screw fixation techniques, cement augmentation with fenestrated screws, or use of expandable pedicle screws to improve bone-implant interface. Judicious selection of treatment modalities and subsequent perioperative optimization is paramount to minimize surgical complications. Contemporary guidelines and evolving paradigms in perioperative evaluation, optimization, and management of the aging spine include the advent of quantitatively evaluating computed tomography (CT) via assessment of the magnitude of Hounsfield units. Prescribing pharmacotherapeutic agents and monitoring bone health requires a multidisciplinary team approach, including endocrinologists and geriatricians to coordinate high-quality care for advanced-age patients who require surgical management of their spinal disorders.
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Affiliation(s)
- Miles Hudson
- Department of Neurosurgery, Mayo Clinic Arizona, Phoenix, AZ, USA.
| | - Jenna Meyer
- Department of Neurosurgery, Mayo Clinic Arizona, Phoenix, AZ, USA
| | - Alexander Evans
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Chandan Krishna
- Department of Neurosurgery, Mayo Clinic Arizona, Phoenix, AZ, USA
| | - Zachary A Smith
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
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Swart A, Hamouda AM, Pennington Z, Mikula AL, Martini M, Lakomkin N, Shafi M, Nassr AN, Sebastian AS, Fogelson JL, Freedman BA, Elder BD. Reduced Bone Density Based on Hounsfield Units After Long-Segment Spinal Fusion with Harrington Rods. World Neurosurg 2024; 185:e509-e515. [PMID: 38373686 DOI: 10.1016/j.wneu.2024.02.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/10/2024] [Accepted: 02/12/2024] [Indexed: 02/21/2024]
Abstract
BACKGROUND Long-segment instrumentation, such as Harrington rods, offloads vertebrae within the construct, which may result in significant stress shielding of the fused segments. The present study aimed to determine the effects of spinal fusion on bone density by measuring Hounsfield units (HUs) throughout the spine in patients with a history of Harrington rod fusion. METHODS Patients with a history of Harrington rod fusion treated at a single academic institution were identified. Mean HUs were calculated at 5 spinal segments for each patient: cranial adjacent mobile segment, cranial fused segment, midconstruct fused segment, caudal fused segment, and caudal adjacent mobile segment. Mean HUs for each level were compared using a paired-sample t test, with statistical significance defined by P < 0.05. Hierarchic multiple regression, including age, gender, body mass index, and time since original fusion, was used to determine predictors of midfused segment HUs. RESULTS One hundred patients were included (mean age, 55 ± 12 years; 62% female). Mean HUs for the midconstruct fused segment (110; 95% confidence interval [CI], 100-121) were significantly lower than both the cranial and caudal fused segments (150 and 118, respectively; both P < 0.05), as well as both the cranial and caudal adjacent mobile segments (210 and 130, respectively; both P < 0.001). Multivariable regression showed midconstruct HUs were predicted only by patient age (-2.6 HU/year; 95% CI, -3.4 to -1.9; P < 0.001) and time since original surgery (-1.4 HU/year; 95% CI, -2.6 to -0.2; P = 0.02). CONCLUSIONS HUs were significantly decreased in the middle of previous long-segment fusion constructs, suggesting that multilevel fusion constructs lead to vertebral bone density loss within the construct, potentially from stress shielding.
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Affiliation(s)
- Alexander Swart
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Zach Pennington
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Anthony L Mikula
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Michael Martini
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Nikita Lakomkin
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Mahnoor Shafi
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Ahmad N Nassr
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Arjun S Sebastian
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Jeremy L Fogelson
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Brett A Freedman
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Benjamin D Elder
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA.
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Swart A, Hamouda A, Pennington Z, Lakomkin N, Mikula AL, Martini ML, Shafi M, Subramaniam T, Sebastian AS, Freedman BA, Nassr AN, Fogelson JL, Elder BD. Significant Reduction in Bone Density as Measured by Hounsfield Units in Patients with Ankylosing Spondylitis or Diffuse Idiopathic Skeletal Hyperostosis. J Clin Med 2024; 13:1430. [PMID: 38592686 PMCID: PMC10932308 DOI: 10.3390/jcm13051430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/05/2024] [Accepted: 02/27/2024] [Indexed: 04/10/2024] Open
Abstract
Background: Multisegmental pathologic autofusion occurs in patients with ankylosing spondylitis (AS) and diffuse idiopathic skeletal hyperostosis (DISH). It may lead to reduced vertebral bone density due to stress shielding. Methods: This study aimed to determine the effects of autofusion on bone density by measuring Hounsfield units (HU) in the mobile and immobile spinal segments of patients with AS and DISH treated at a tertiary care center. The mean HU was calculated for five distinct regions-cranial adjacent mobile segment, cranial fused segment, mid-construct fused segment, caudal fused segment, and caudal adjacent mobile segment. Means for each region were compared using paired-sample t-tests. Multivariable regression was used to determine independent predictors of mid-fused segment HUs. Results: One hundred patients were included (mean age 76 ± 11 years, 74% male). The mean HU for the mid-construct fused segment (100, 95% CI [86, 113]) was significantly lower than both cranial and caudal fused segments (174 and 108, respectively; both p < 0.001), and cranial and caudal adjacent mobile segments (195 and 115, respectively; both p < 0.001). Multivariable regression showed the mid-construct HUs were predicted by history of smoking (-30 HU, p = 0.009). Conclusions: HUs were significantly reduced in the middle of long-segment autofusion, which was consistent with stress shielding. Such shielding may contribute to the diminution of vertebral bone integrity in AS/DISH patients and potentially increased fracture risk.
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Affiliation(s)
- Alexander Swart
- Department of Neurologic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Abdelrahman Hamouda
- Department of Neurologic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Zach Pennington
- Department of Neurologic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Nikita Lakomkin
- Department of Neurologic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Anthony L. Mikula
- Department of Neurologic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Michael L. Martini
- Department of Neurologic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Mahnoor Shafi
- Department of Neurologic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | | | - Arjun S. Sebastian
- Department of Orthopedic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Brett A. Freedman
- Department of Orthopedic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Ahmad N. Nassr
- Department of Orthopedic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Jeremy L. Fogelson
- Department of Neurologic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
| | - Benjamin D. Elder
- Department of Neurologic Surgery, Mayo Clinic, 200 1st St SW, Rochester, MN 55905, USA
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Mihara Y, Ishimoto T, Ozasa R, Omura T, Yamato Y, Yamada T, Okamoto A, Matsuyama Y, Nakano T. Deterioration of apatite orientation in the cholecystokinin B receptor gene (Cckbr)-deficient mouse femurs. J Bone Miner Metab 2023; 41:752-759. [PMID: 37676507 DOI: 10.1007/s00774-023-01460-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 07/20/2023] [Indexed: 09/08/2023]
Abstract
INTRODUCTION The discrepancy between bone mineral density (BMD), the gold standard for bone assessment, and bone strength is a constraint in diagnosing bone function and determining treatment strategies for several bone diseases. Gastric hypochlorhydria induced by clinically used proton pump inhibitor (PPI) therapy indicates a discordance between changes in BMD and bone strength. Here, we used Cckbr-deficient mice with gastric hypochlorhydria to examine the effect of gastric hypochlorhydria on bone mass, BMD, and preferential orientation of the apatite crystallites, which is a strong indicator of bone strength. MATERIALS AND METHODS Cckbr-deficient mice were created, and their femurs were analyzed for BMD and preferential orientation of the apatite c-axis along the femoral long axis. RESULTS Cckbr-deficient mouse femurs displayed a slight osteoporotic bone loss at 18 weeks of age; however, BMD was comparable to that of wild-type mice. In contrast, apatite orientation in the femur mid-shaft significantly decreased from 9 to 18 weeks. To the best of our knowledge, this is the first report demonstrating the deterioration of apatite orientation in the bones of Cckbr-deficient mice. CONCLUSION Lesions in Cckbr-deficient mice occurred earlier in apatite orientation than in bone mass. Hence, bone apatite orientation may be a promising method for detecting hypochlorhydria-induced osteoporosis caused by PPI treatment and warrants urgent clinical applications.
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Affiliation(s)
- Yuki Mihara
- Department of Orthopedic Surgery, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Takuya Ishimoto
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1, Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Ryosuke Ozasa
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1, Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Takao Omura
- Department of Orthopedic Surgery, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Yu Yamato
- Department of Orthopedic Surgery, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Tomohiro Yamada
- Department of Orthopedic Surgery, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Ayako Okamoto
- Department of Orthopedic Surgery, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Yukihiro Matsuyama
- Department of Orthopedic Surgery, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-Ku, Hamamatsu, Shizuoka, 431-3192, Japan.
| | - Takayoshi Nakano
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1, Yamada-Oka, Suita, Osaka, 565-0871, Japan.
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Jiang Q, Gao H, Shi X, Wu Y, Ni W, Shang A. Total body bone mineral density and various spinal disorders: a Mendelian randomization study. Front Endocrinol (Lausanne) 2023; 14:1285137. [PMID: 38027141 PMCID: PMC10644298 DOI: 10.3389/fendo.2023.1285137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/19/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Observational studies have yielded inconsistent findings regarding the correlation between bone mineral density (BMD) and various spinal disorders. To explore the relationship between total-body BMD and various spinal disorders further, we conducted a Mendelian randomization analysis to assess this association. Methods Two-sample bidirectional Mendelian randomization (MR) analysis was employed to investigate the association between total-body BMD and various spinal disorders. The inverse-variance weighted (IVW) method was used as the primary effect estimate, and additional methods, including weighted median, MR-Egger, simple mode, and weighted mode, were used to assess the reliability of the results. To examine the robustness of the data further, we conducted a sensitivity analysis using alternative bone-density databases, validating the outcome data. Results MR revealed a significant positive association between total-body BMD and the prevalence of spondylosis and spinal stenosis. When total-body BMD was considered as the exposure factor, the analysis demonstrated an increased risk of spinal stenosis (IVW odds ratio [OR] 1.23; 95% confidence interval [CI], 1.14-1.32; P < 0.001) and spondylosis (IVW: OR 1.24; 95%CI, 1.16-1.33; P < 0.001). Similarly, when focusing solely on heel BMD as the exposure factor, we found a positive correlation with the development of both spinal stenosis (IVW OR 1.13, 95%CI, 1.05-1.21; P < 0.001) and spondylosis (IVW OR 1.10, 95%CI, 1.03-1.18; P = 0.0048). However, no significant associations were found between total-body BMD and other spinal disorders, including spinal instability, spondylolisthesis/spondylolysis, and scoliosis (P > 0.05). Conclusion This study verified an association of total-body BMD with spinal stenosis and with spondylosis. Our results imply that when an increasing trend in BMD is detected during patient examinations and if the patient complains of numbness and pain, the potential occurrence of conditions such as spondylosis or spinal stenosis should be investigated and treated appropriately.
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Affiliation(s)
- Qingyu Jiang
- Chinese PLA Medical School, Beijing, China
- Department of Neurosurgery, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Haihao Gao
- Chinese PLA Medical School, Beijing, China
- Department of Neurosurgery, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Xudong Shi
- Chinese PLA Medical School, Beijing, China
| | - Yan Wu
- Medical School, Nankai University, Tianjin, China
| | - Wentao Ni
- Department of Pulmonary and Critical Care Medicine, Peking University People's Hospital, Beijing, China
| | - Aijia Shang
- Department of Neurosurgery, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
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Brown RB, Bigelow P, Dubin JA. Breast Cancer and Bone Mineral Density in a U.S. Cohort of Middle-Aged Women: Associations with Phosphate Toxicity. Cancers (Basel) 2023; 15:5093. [PMID: 37894460 PMCID: PMC10604967 DOI: 10.3390/cancers15205093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/10/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
Breast cancer is associated with phosphate toxicity, the toxic effect from dysregulated phosphate metabolism that can stimulate tumorigenesis. Phosphate toxicity and dysregulated phosphate metabolism are also associated with bone mineral abnormalities, including excessive bone mineral loss and deposition. Based on shared associations with dysregulated phosphate metabolism and phosphate toxicity, a hypothesis proposed in the present mixed methods-grounded theory study posits that middle-aged women with incidence of breast cancer had a greater magnitude of changes in bone mineral density over time compared with women who remained cancer-free. To test this hypothesis, a mixed-effects model was used to analyze the associations of breast cancer incidence with spinal bone mineral density changes in the U.S. Study of Women's Health Across the Nation. Compared with women in the cohort who remained cancer-free, women who self-reported breast cancer had higher bone mineral density at baseline, but had more rapid losses in bone mineral density during follow-up visits. These findings agree with the hypothesis that a greater magnitude of changes in bone mineral density over time is associated with breast cancer in a cohort of middle-aged women. The findings also have implications for studies investigating dysregulated phosphate metabolism and phosphate toxicity as causative factors of bone metastasis in metastatic breast cancer. Additionally, the authors previously found increased breast cancer risk associated with high dietary phosphate intake in the same cohort of middle-aged women, and more studies should investigate a low-phosphorus diet to reduce bone mineral abnormalities and tumorigenesis in breast cancer patients.
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Affiliation(s)
- Ronald B. Brown
- School of Public Health Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (P.B.); (J.A.D.)
| | - Philip Bigelow
- School of Public Health Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (P.B.); (J.A.D.)
| | - Joel A. Dubin
- School of Public Health Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (P.B.); (J.A.D.)
- Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, ON N2L 3G1, Canada
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Diamond TH, Bryant C, Quinn R, Mohanty ST, Bonar F, Baldock PA, McDonald MM. Increased Bone Formation and Accelerated Bone Mass Accrual in a Man Presenting with Diffuse Osteosclerosis/High Bone Mass Phenotype and Adenocarcinoma of Unknown Primary. JBMR Plus 2023; 7:e10734. [PMID: 37614304 PMCID: PMC10443075 DOI: 10.1002/jbm4.10734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 12/20/2022] [Accepted: 01/19/2023] [Indexed: 02/22/2023] Open
Abstract
A 71-year-old man was referred for evaluation of incidental generalized osteosclerosis. He was found to have a high bone mass (HBM) with an elevated lumbar spine bone mineral density (BMD) Z-score of +5.3. Over an 18-month period, his lumbar spine BMD measured by dual energy X-ray absorptiometry (DXA) had increased by +64% from 1.09 to 1.79 g/cm2 and femoral neck by +21% from 0.83 to 1.01 g/cm2. Biochemical markers of bone turnover were markedly increased (serum propeptide of type 1 collagen and urine telopeptides greater than 10-times normal). The high bone formation and increased skeletal calcium acquisition resulted in profound hypocalcemia (low serum calcium 1.88 mmol/L) and hypocalciuria (low urinary calcium <0.2 mmol/day). Positron emission tomography (PET) with 2-deoxy-2-[fluorine-18] fluoro-D-glucose (FDG) confirmed diffuse osteosclerosis without focal areas of abnormal FDG uptake in the skeleton or elsewhere to suggest either an underlying primary malignancy or metastatic disease. Bone biopsy showed markedly sclerotic woven and lamellar bone. The marrow space was devoid of typical bone cells and adipocytes and instead was filled by fibromyxoid stroma, infiltrated by small clusters of tumor cells. Bone histomorphometry and micro-computed tomography demonstrated an elevated trabecular bone volume and trabecular plate thickness. The bone disorder in this case is unique and raises the possibility of a new yet undefined novel anabolic paracrine factor (or factors) secreted by an adenocarcinoma of unknown primary that resulted in dramatic increases in BMD, HBM, and radiological osteosclerosis. The differential diagnosis and potential mechanisms responsible for the HBM are discussed. © 2023 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Terrence H. Diamond
- Department of EndocrinologySt George Hospital Campus, University of New South WalesSydneyAustralia
| | - Carl Bryant
- Department of RadiologySt George Private HospitalSydneyAustralia
| | - Richard Quinn
- Department of Nuclear MedicineSt George Private HospitalSydneyAustralia
| | - Sindhu T. Mohanty
- Skeletal Diseases ProgramThe Garvan Institute of Medical ResearchDarlinghurstAustralia
| | - Fiona Bonar
- Department of Anatomical PathologyDouglass Hanly Moir Pathology and Royal Prince Alfred HospitalSydneyAustralia
| | - Paul A. Baldock
- Skeletal Diseases ProgramThe Garvan Institute of Medical ResearchDarlinghurstAustralia
- St Vincent's Clinical CampusSchool of Clinical Medicine, University of New South WalesKensingtonAustralia
| | - Michelle M. McDonald
- Skeletal Diseases ProgramThe Garvan Institute of Medical ResearchDarlinghurstAustralia
- St Vincent's Clinical CampusSchool of Clinical Medicine, University of New South WalesKensingtonAustralia
- School of Medicine Science, Faculty of Medicine and HealthThe University of SydneySydneyAustralia
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Kim AYE, Iyer S. In Response: MRI-based Score for Assessment of Bone Mineral Density in Operative Spine Patients. Spine (Phila Pa 1976) 2023; 48:E246. [PMID: 37000685 DOI: 10.1097/brs.0000000000004653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 03/14/2023] [Indexed: 04/01/2023]
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10
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Kim AYE, Lyons K, Sarmiento M, Lafage V, Iyer S. MRI-Based Score for Assessment of Bone Mineral Density in Operative Spine Patients. Spine (Phila Pa 1976) 2023; 48:107-112. [PMID: 36255388 DOI: 10.1097/brs.0000000000004509] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/30/2022] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Retrospective comparison. OBJECTIVE The aim was to determine whether a previously developed magnetic resonance imaging (MRI)-derived bone mineral density (BMD) scoring system can differentiate between healthy and osteoporotic vertebrae and to validate this scoring system against quantitative computed tomography measurements. SUMMARY OF BACKGROUND DATA BMD is an important preoperative consideration in spine surgery. Techniques to measure BMD are subject to falsely elevated values in the setting of spondylosis (dual-energy X-ray absorptiometry) or require significant exposure to radiation [quantitative computed tomography (QCT)]. Previous studies have shown that MRI may be utilized to measure bone quality using changes in the bone marrow signal observed on T1-weighted MRIs. MATERIALS AND METHODS Retrospective study of patients who underwent operative lumbar procedures at a single tertiary institution between 2016 and 2021 (n=61). Vertebral bone quality (VBQ) scores were measured by dividing the median signal intensities of L1-L4 by the signal intensity of cerebrospinal fluid on noncontrast T1W MRI. Demographic data, comorbidities, VBQ scores, and QCT-derived T scores and BMD of the lumbar spine were compared between healthy ( T score ≥-1; n=21), osteopenic (-2.5 < T score < -1; n=21), and osteoporotic ( T score ≤-2.5; n=19) cohorts using analysis of variance with post hoc Tukey test. Linear regression and receiver operating characteristic curve analyses were performed to assess the predictive value of VBQ scores. Pearson correlation test was used to evaluate the association between VBQ scores and QCT-derived measurements. RESULTS VBQ differentiated between healthy and osteoporotic groups ( P =0.009). Receiver operating characteristic curve analysis revealed that a greater VBQ score was associated with presence of osteoporosis (area under the curve=0.754, P =0.006). Cutoff VBQ for osteoporosis was 2.6 (Youden index 0.484; sensitivity: 58%; specificity: 90%). VBQ scores weakly correlated with QCT-derived BMD ( P =0.03, r =-0.27) and T scores ( P =0.04, r =-0.26). CONCLUSION This study attempted to further validate a previously developed MRI-based BMD scoring system against QCT-derived measurements. VBQ score was found to be a significant predictor of osteoporosis and could differentiate between healthy and osteoporotic vertebrae.
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Sadhukhan S, Mehta P, Rajender S, Gupta SK, Chattopadhyay N. Proposing a clinical algorithm for better diagnosis of hypophosphatasia in resource-limiting situations. Osteoporos Int 2022; 33:2479-2493. [PMID: 35776147 DOI: 10.1007/s00198-022-06480-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 06/16/2022] [Indexed: 10/17/2022]
Abstract
Early diagnosis of hypophosphatasia (HPP) is challenging. Here, we propose to broaden the diagnostic criteria of HPP by reviewing published data on BMD and fractures in HPP patients. Non-osteoporotic fractures and higher than normal lumbar BMD were recurrent in HPP patients and could be included as diagnostic criteria. HPP is a genetic disorder caused by autosomal recessive or dominant loss-of-function mutations in the ALPL gene that encodes for tissue-nonspecific alkaline phosphatase (TNSALP). Expressive genetic heterogeneity and varying severity of TNSALP deficiency lead to a wide-ranging presentation of skeletal diseases at different ages that coupled with HPP's rarity and limitation of biochemical and mutational studies present serious hurdles to early diagnosis and management of HPP. To widen the scope of HPP diagnosis, we assessed the possibility of areal bone mineral density (BMD) as an additional clinical feature of this disease. PubMed, Web of Science, and ScienceDirect were searched with the following keywords: ("Hypophosphatasia OR HPP") AND ("Bone Mineral Density OR BMD") AND "Human". Studies and case reports of subjects with age ≥ 18 years and having BMD data were included. We pooled data from 25 publications comprising 356 subjects (90 males, 266 females). Only four studies had a control group. Biochemical hallmarks, pyridoxal 5'-phosphate (PLP) and phosphoethanolamine (PEA), were reported in fifteen and six studies, respectively. Twenty studies reported genetic data, nineteen studies reported non-vertebral fractures, all studies reported lumbar spine (LS) BMD, and nineteen reported non-vertebral BMD. Higher than normal and normal BMD at LS were reported in three and two studies, respectively. There was marked heterogeneity in BMD at the non-vertebral sites. Higher than normal or normal LS BMD in an adult with minimal or insufficient fractures, pseudofractures, non-healing fractures, fragility fractures, and stress fractures may be included in the diagnostic protocol of HPP. However, genetic testing is recommended for a definitive diagnosis.
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Affiliation(s)
- Sreyanko Sadhukhan
- Division of Endocrinology and Centre for Research in Anabolic Skeletal Targets in Health and Illness (ASTHI), CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | - Poonam Mehta
- Division of Endocrinology and Centre for Research in Anabolic Skeletal Targets in Health and Illness (ASTHI), CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | - Singh Rajender
- Division of Endocrinology and Centre for Research in Anabolic Skeletal Targets in Health and Illness (ASTHI), CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | - Sushil Kumar Gupta
- Department of Endocrinology, Sanjay Gandhi Post-Graduate Institute of Medical Sciences, Lucknow, India
| | - Naibedya Chattopadhyay
- Division of Endocrinology and Centre for Research in Anabolic Skeletal Targets in Health and Illness (ASTHI), CSIR-Central Drug Research Institute, Lucknow, India.
- Academy of Scientific and Innovative Research, Ghaziabad, 201002, India.
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12
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Wild C, Jawad A. Clinical image: Aortic calcification causing artefactual increase of bone density on a DXA scan. J R Coll Physicians Edinb 2022; 52:327-328. [PMID: 36451614 DOI: 10.1177/14782715221141334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023] Open
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13
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Ground truth generalizability affects performance of the artificial intelligence model in automated vertebral fracture detection on plain lateral radiographs of the spine. Spine J 2022; 22:511-523. [PMID: 34737066 DOI: 10.1016/j.spinee.2021.10.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/23/2021] [Accepted: 10/25/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Computer-aided diagnosis with artificial intelligence (AI) has been used clinically, and ground truth generalizability is important for AI performance in medical image analyses. The AI model was trained on one specific group of older adults (aged≧60) has not yet been shown to work equally well in a younger adult group (aged 18-59). PURPOSE To compare the performance of the developed AI model with ensemble method trained with the ground truth for those aged 60 years or older in identifying vertebral fractures (VFs) on plain lateral radiographs of spine (PLRS) between younger and older adult populations. STUDY DESIGN/SETTING Retrospective analysis of PLRS in a single medical institution. OUTCOME MEASURES Accuracy, sensitivity, specificity, and interobserver reliability (kappa value) were used to compare diagnostic performance of the AI model and subspecialists' consensus between the two groups. METHODS Between January 2016 and December 2018, the ground truth of 941 patients (one PLRS per person) aged 60 years and older with 1101 VFs and 6358 normal vertebrae was used to set up the AI model. The framework of the developed AI model includes: object detection with You Only Look Once Version 3 (YOLOv3) at T0-L5 levels in the PLRS, data pre-preprocessing with image-size and quality processing, and AI ensemble model (ResNet34, DenseNet121, and DenseNet201) for identifying or grading VFs. The reported overall accuracy, sensitivity and specificity were 92%, 91% and 93%, respectively, and external validation was also performed. Thereafter, patients diagnosed as VFs and treated in our institution during October 2019 to August 2020 were the study group regardless of age. In total, 258 patients (339 VFs and 1725 normal vertebrae) in the older adult population (mean age 78±10.4; range, 60-106) were enrolled. In the younger adult population (mean age 36±9.43; range, 20-49), 106 patients (120 VFs and 728 normal vertebrae) were enrolled. After identification and grading of VFs based on the Genant method with consensus between two subspecialists', VFs in each PLRS with human labels were defined as the testing dataset. The corresponding CT or MRI scan was used for labeling in the PLRS. The bootstrap method was applied to the testing dataset. RESULTS The model for clinical application, Digital Imaging and Communications in Medicine (DICOM) format, is uploaded directly (available at: http://140.113.114.104/vght_demo/svf-model (grading) and http://140.113.114.104/vght demo/svf-model2 (labeling). Overall accuracy, sensitivity and specificity in the older adult population were 93.36% (95% CI 93.34%-93.38%), 88.97% (95% CI 88.59%-88.99%) and 94.26% (95% CI 94.23%-94.29%), respectively. Overall accuracy, sensitivity and specificity in the younger adult population were 93.75% (95% CI 93.7%-93.8%), 65.00% (95% CI 64.33%-65.67%) and 98.49% (95% CI 98.45%-98.52%), respectively. Accuracy reached 100% in VFs grading once the VFs were labeled accurately. The unique pattern of limbus-like VFs, 43 (35.8%) were investigated only in the younger adult population. If limbus-like VFs from the dataset were not included, the accuracy increased from 93.75% (95% CI 93.70%-93.80%) to 95.78% (95% CI 95.73%-95.82%), sensitivity increased from 65.00% (95% CI 64.33%-65.67%) to 70.13% (95% CI 68.98%-71.27%) and specificity remained unchanged at 98.49% (95% CI 98.45%-98.52%), respectively. The main causes of false negative results in older adults were patients' lung markings, diaphragm or bowel airs (37%, n=14) followed by type I fracture (29%, n=11). The main causes of false negatives in younger adults were limbus-like VFs (45%, n=19), followed by type I fracture (26%, n=11). The overall kappa between AI discrimination and subspecialists' consensus in the older and younger adult populations were 0.77 (95% CI, 0.733-0.805) and 0.72 (95% CI, 0.6524-0.80), respectively. CONCLUSIONS The developed VF-identifying AI ensemble model based on ground truth of older adults achieved better performance in identifying VFs in older adults and non-fractured thoracic and lumbar vertebrae in the younger adults. Different age distribution may have potential disease diversity and implicate the effect of ground truth generalizability on the AI model performance.
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14
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Kuiper JR, Braun JM, Calafat AM, Lanphear BP, Cecil KM, Chen A, Xu Y, Yolton K, Kalkwarf HJ, Buckley JP. Associations of pregnancy phthalate concentrations and their mixture with early adolescent bone mineral content and density: The Health Outcomes and Measures of the Environment (HOME) study. Bone 2022; 154:116251. [PMID: 34740813 PMCID: PMC8671261 DOI: 10.1016/j.bone.2021.116251] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/22/2021] [Accepted: 10/29/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND The developing fetus may be particularly susceptibility to environmental osteotoxicants, but studies of pregnancy phthalate exposures and childhood bone health are scarce. OBJECTIVES To examine relations of pregnancy phthalate exposure biomarkers with early adolescent bone mineral density (BMD) and bone mineral content (BMC) in a prospective birth cohort. METHODS We used data from 223 pregnant mothers and their children enrolled in a Cincinnati, OH area cohort from 2003 to 2006. We quantified monoethyl phthalate (MEP), monoisobutyl phthalate, monobutyl phthalate, monobenzyl phthalate, mono-(3-carboxypropyl) phthalate (MCPP), and four metabolites of di-2-ethylhexyl phthalate in maternal urine collected at 16 and 26 weeks gestation, and calculated the average of creatinine-standardized concentrations. Using dual x-ray absorptiometry measures at age 12 years, we calculated BMD and BMC Z-scores for six skeletal sites. In overall and sex-stratified models, we estimated covariate-adjusted associations per 2-fold increase in phthalate biomarker concentrations using linear regression, and estimated joint effects of the phthalate biomarkers mixture using Bayesian kernel machine regression (BKMR) and quantile g-computation. RESULTS In single phthalate models, several biomarkers were positively associated with BMC and BMD. For example, each doubling of MEP and MCPP, 1/3rd distal radius BMD Z-score increased by 0.09 (95% CI: 0.01, 0.17) and 0.16 (95% CI: 0.01, 0.31), respectively. For phthalate mixtures, associations were generally U-shaped among males and positive-linear among females, using both statistical methods. Mixture associations were strongest with forearm sites: in BKMR models, increasing all biomarkers from the 50th to 90th percentile was associated with a 0.64 (95% CI: 0.01, 1.28) greater 1/3rd distal radius BMD Z-score in males, and a 0.49 (95% CI: -0.13, 1.10) greater ultradistal radius BMD Z-score in females. DISCUSSION In this study, phthalate exposures during gestation were associated with increased BMD Z-scores in early adolescence, though further research is needed to determine implications for long-term skeletal health.
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Affiliation(s)
- Jordan R Kuiper
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Joseph M Braun
- Department of Epidemiology, Brown University, Providence, RI, USA
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Bruce P Lanphear
- Faculty of Health Sciences, Simon Fraser University, Vancouver, BC, Canada
| | - Kim M Cecil
- Department of Radiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Aimin Chen
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, PA, USA
| | - Yingying Xu
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Kimberly Yolton
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Heidi J Kalkwarf
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Jessie P Buckley
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
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15
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Wang Z, Li X, Wang Y, Fu W, Liu Y, Zhang Z, Wang C. Natural History of Type II Autosomal Dominant Osteopetrosis: A Single Center Retrospective Study. Front Endocrinol (Lausanne) 2022; 13:819641. [PMID: 35370969 PMCID: PMC8970046 DOI: 10.3389/fendo.2022.819641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 02/23/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Autosomal dominant osteopetrosis II (ADO II, MIM166600) is a sclerosing bone disorder caused by CLCN7 mutation. The main clinical characteristics include minor trauma-related fracture and hip osteoarthritis, whereas cranial nerve palsy and bone marrow failure rarely develop. Although it is generally believed that ADO II has a relatively benign course, the natural course of the disease in Chinese patients remains unclear. MATERIALS AND METHODS Thirty-six patients diagnosed with ADO II in Shanghai Jiao Tong University Affiliated Sixth People's Hospital from 2008 to 2021 were studied retrospectively. Among them, 15 patients were followed for an average of 6.3 years (1-14 years). RESULTS In this study, minor trauma-related fractures of the limb were the most typical clinical manifestations. Visual loss (1/36) and bone marrow failure (2/36), was rare in this study. The condition of ADO II seems to be stable in most patients. There were no correlations between markedly elevated bone mineral density (BMD) and minor trauma-related fractures. In total, 21 diseases causing mutations were detected. Among them, the mutation c.2299C>T (p.Arg767Trp) was the most common (16.67%), and mutation c.937G>A [p.(Glu313Lys)] was associated with severe fractures, haematological defects and cranial palsy. CONCLUSIONS Minor trauma-related fracture is the most typical clinical manifestation of ADO II and always occurs in. The mutation c.2299C>T (p.Arg767Trp) is in general a relatively common variant, while the mutation c.937G>A [p.(Glu313Lys)] seems to be associated with severe phenotype. In our study, ADO II seems to remain stable over time.
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Affiliation(s)
| | | | | | | | | | | | - Chun Wang
- *Correspondence: Chun Wang, ; Zhenlin Zhang,
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16
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Hartley A, Sanderson E, Granell R, Paternoster L, Zheng J, Smith GD, Southam L, Hatzikotoulas K, Boer CG, van Meurs J, Zeggini E, Gregson CL, Tobias JH. Using multivariable Mendelian randomization to estimate the causal effect of bone mineral density on osteoarthritis risk, independently of body mass index. Int J Epidemiol 2021; 51:1254-1267. [PMID: 34897459 PMCID: PMC9365636 DOI: 10.1093/ije/dyab251] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 11/15/2021] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVES Observational analyses suggest that high bone mineral density (BMD) is a risk factor for osteoarthritis (OA); it is unclear whether this represents a causal effect or shared aetiology and whether these relationships are body mass index (BMI)-independent. We performed bidirectional Mendelian randomization (MR) to uncover the causal pathways between BMD, BMI and OA. METHODS One-sample (1S)MR estimates were generated by two-stage least-squares regression. Unweighted allele scores instrumented each exposure. Two-sample (2S)MR estimates were generated using inverse-variance weighted random-effects meta-analysis. Multivariable MR (MVMR), including BMD and BMI instruments in the same model, determined the BMI-independent causal pathway from BMD to OA. Latent causal variable (LCV) analysis, using weight-adjusted femoral neck (FN)-BMD and hip/knee OA summary statistics, determined whether genetic correlation explained the causal effect of BMD on OA. RESULTS 1SMR provided strong evidence for a causal effect of BMD estimated from heel ultrasound (eBMD) on hip and knee OA {odds ratio [OR]hip = 1.28 [95% confidence interval (CI) = 1.05, 1.57], p = 0.02, ORknee = 1.40 [95% CI = 1.20, 1.63], p = 3 × 10-5, OR per standard deviation [SD] increase}. 2SMR effect sizes were consistent in direction. Results suggested that the causal pathways between eBMD and OA were bidirectional (βhip = 1.10 [95% CI = 0.36, 1.84], p = 0.003, βknee = 4.16 [95% CI = 2.74, 5.57], p = 8 × 10-9, β = SD increase per doubling in risk). MVMR identified a BMI-independent causal pathway between eBMD and hip/knee OA. LCV suggested that genetic correlation (i.e. shared genetic aetiology) did not fully explain the causal effects of BMD on hip/knee OA. CONCLUSIONS These results provide evidence for a BMI-independent causal effect of eBMD on OA. Despite evidence of bidirectional effects, the effect of BMD on OA did not appear to be fully explained by shared genetic aetiology, suggesting a direct action of bone on joint deterioration.
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Affiliation(s)
- April Hartley
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.,Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Eleanor Sanderson
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Raquel Granell
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Lavinia Paternoster
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Jie Zheng
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - George Davey Smith
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Lorraine Southam
- Institute of Translational Genomics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Konstantinos Hatzikotoulas
- Institute of Translational Genomics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Cindy G Boer
- Department of Internal Medicine and Epidemiology, Erasmus MC, Rotterdam, The Netherlands
| | - Joyce van Meurs
- Department of Internal Medicine and Epidemiology, Erasmus MC, Rotterdam, The Netherlands
| | - Eleftheria Zeggini
- Institute of Translational Genomics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | | | - Celia L Gregson
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Jon H Tobias
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.,Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
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The current situation in the approach to osteoporosis in older adults in Turkey: areas in need of improvement with a model for other populations. Arch Osteoporos 2021; 16:179. [PMID: 34846612 DOI: 10.1007/s11657-021-01038-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 11/08/2021] [Indexed: 02/03/2023]
Abstract
PURPOSE The total number of older adults in Turkey is striking, amounting to around 8 million, and this translates into considerably higher numbers of cases of osteoporosis (OP) and fractures in older adults. In this article, we outlined the current situation of OP in older adults in Turkey and investigated the differences between Turkey and a representative developed European country (Belgium), in terms of the screening, diagnosis, and treatment of OP. Our intention in this regard was to identify areas in need of improvement and subsequently to make a clear call for action to address these issues. METHODS Herein, considering the steps related to the OP approach, we made a complete review of the studies conducted in Turkey and compared with the literature recommendations. RESULTS There is a need for a national osteoporotic fracture registry; measures should be taken to improve the screening and treatment of OP in older males, such as educational activities; technicians involved in dual-energy X-ray absorptiometry (DXA) scanning should undergo routine periodic training; all DXA centers should identify center-specific least significant change values; all older adults should be considered for routine lateral dorsolumbar X-ray imaging for the screening of vertebral fractures while ordering DXA scans; the inclusion of vertebral fracture assessment (VFA) software in DXA assessments should be considered; screening using a fracture risk assessment tool (FRAX) algorithm that is specific to Turkey should be integrated; the fortification of foods with vitamin D is required; the high fracture risk by country-specific FRAX algorithm and the presence of falls/high fall risk should be integrated in reimbursement terms; and finally, more "fracture liaison services" should be established. CONCLUSION We suggest that the practical consideration of our suggestions will provide considerable support to the efforts for combating with the adverse consequences of OP in society. This approach can be subsequently modeled for other populations to improve the management of OP globally.
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Association of short sleep duration and trabecular bone score. Sci Rep 2021; 11:19821. [PMID: 34615958 PMCID: PMC8494739 DOI: 10.1038/s41598-021-99410-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 09/14/2021] [Indexed: 11/17/2022] Open
Abstract
Short sleep duration has been found to be associated with bone health deterioration by using bone mineral density (BMD). Only a few attempts have been made to assess the association of sleep duration and bone by utilizing the trabecular bone score (TBS). The aim of this study was to examine the association between sleep duration and TBS from a national database. A total of 4480 eligible participants older than 20 years who attended the United States National Health and Nutrition Examination Survey (NHANES) from 2005 to 2006 with TBS data and self-reported sleep duration. The association between sleep duration and TBS was investigated using a multivariate regression model with covariate adjustment. TBS was lowest in individuals with a short sleep duration (≤ 5 h) and it was increased in those with longer self-reported total sleep times. After a full adjustment for covariates, those sleeping less than 5 h had a significantly lower TBS than the reference group (sleep duration of 7 h). In subgroup analyses, an association between short sleep duration (≤ 5 h) and lower TBS persisted in older ages (≥ 60 years old), women, obese adults (BMI ≥ 30 kg/m2), and non-Hispanic Whites. Short sleep duration is associated with low TBS in women, obese adults (BMI ≥ 30 kg/m2), and non-Hispanic whites. Strict self-monitoring of body weight, well-tailored controls of underlying disease(s), and adequate sleep may help prevent osteoporosis.
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Ahern DP, McDonnell JM, Riffault M, Evans S, Wagner SC, Vaccaro AR, Hoey DA, Butler JS. A meta-analysis of the diagnostic accuracy of Hounsfield units on computed topography relative to dual-energy X-ray absorptiometry for the diagnosis of osteoporosis in the spine surgery population. Spine J 2021; 21:1738-1749. [PMID: 33722727 DOI: 10.1016/j.spinee.2021.03.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/23/2021] [Accepted: 03/08/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND The preoperative identification of osteoporosis in the spine surgery population is of crucial importance. Limitations associated with dual-energy x-ray absorptiometry, such as access and reliability, have prompted the search for alternative methods to diagnose osteoporosis. The Hounsfield Unit(HU), a readily available measure on computed tomography, has garnered considerable attention in recent years as a potential diagnostic tool for reduced bone mineral density. However, the optimal threshold settings for diagnosing osteoporosis have yet to be determined. METHODS We selected studies that included comparison of the HU(index test) with dual-energy x-ray absorptiometry evaluation(reference test). Data quality was assessed using the standardised QUADAS-2 criteria. Studies were characterised into 3 categories, based on the threshold of the index test used with the goal of obtaining a high sensitivity, high specificity or balanced sensitivity-specificity test. RESULTS 9 studies were eligible for meta-analysis. In the high specificity group, the pooled sensitivity was 0.652 (95% CI 0.526 - 0.760), specificity 0.795 (95% CI 0.711 - 0.859) and diagnostic odds ratio was 6.652 (95% CI 4.367 - 10.133). In the high sensitivity group, the overall pooled sensitivity was 0.912 (95% CI 0.718 - 0.977), specificity was 0.67 (0.57 - 0.75) and diagnostic odds ratio was 19.424 (5.446 - 69.275). In the balanced sensitivity-specificity group, the overall pooled sensitivity was 0.625 (95% CI 0.504 - 0.732), specificity was 0.914 (0.823 - 0.960) and diagnostic odds ratio was 14.880 (7.521 - 29.440). Considerable heterogeneity existed throughout the analysis. CONCLUSION In conclusion, the HU is a clinically useful tool to aide in the diagnosis of osteoporosis. However, the heterogeneity seen in this study warrants caution in the interpretation of results. We have demonstrated the impact of differing HU threshold values on the diagnostic ability of this test. We would propose a threshold of 135 HU to diagnose OP. Future work would investigate the optimal HU cut-off to differentiate normal from low bone mineral density.
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Affiliation(s)
- Daniel P Ahern
- School of Medicine, Trinity College Dublin, DN, Ireland; National Spinal Injuries Unit, Department of Trauma & Orthopaedic Surgery, Mater Misericordiae University Hospital, DN, Ireland; Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2 D02 R590, Ireland.
| | - Jake M McDonnell
- Royal College of Surgeons in Ireland, St. Stephen's Green, DN, Ireland
| | - Mathieu Riffault
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2 D02 R590, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin 2 D02 DK07, Ireland; Advanced Materials and Bioengineering Research Centre, Trinity College Dublin & RCSI, Dublin 2 D02 VN51, Ireland
| | - Shane Evans
- School of Medicine and Medical Science, University College Dublin, DN, Ireland
| | - Scott C Wagner
- Department of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Alexander R Vaccaro
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, USA
| | - David A Hoey
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2 D02 R590, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin 2 D02 DK07, Ireland; Advanced Materials and Bioengineering Research Centre, Trinity College Dublin & RCSI, Dublin 2 D02 VN51, Ireland
| | - Joseph S Butler
- National Spinal Injuries Unit, Department of Trauma & Orthopaedic Surgery, Mater Misericordiae University Hospital, DN, Ireland; School of Medicine and Medical Science, University College Dublin, DN, Ireland
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20
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Paccou J, Javier RM, Henry-Desailly I, Ternynck C, Nottez A, Legroux-Gérot I, Robin F, Fardellone P, Lespessailles E, Roux C, Guggenbuhl P, Kolta S, Cortet B. The French multicentre elevated bone mass study: prevalence and causes. Osteoporos Int 2021; 32:1763-1775. [PMID: 33655400 DOI: 10.1007/s00198-021-05898-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 02/16/2021] [Indexed: 10/22/2022]
Abstract
UNLABELLED The purpose of this multicentric study was to evaluate the prevalence and causes of Elevated Bone Mass (EBM) in patients who underwent DXA scanning over a 10-year period. The prevalence of EBM was 1 in 100. The main causes of EBM were degenerative spine disorders and renal osteodystrophy. INTRODUCTION Reports of elevated bone mass (EBM) on routine dual energy X-Ray absorptiometry (DXA) scanning are not infrequent. However, epidemiological studies of EBM are few and definition thresholds are variable. The purpose of this French multicentric study was to evaluate the prevalence and causes of EBM in adult patients who underwent DXA scanning over a 10-year period. METHODS This multicentric, retrospective study was conducted in six French regional bone centres. DXA databases were initially searched for individuals with a bone mineral density (BMD) Z-score ≥ +4 at any site in the lumbar spine or hip from April 1st, 2008 to April 30st, 2018. RESULTS In all, 72,225 patients with at least one DXA scan were identified. Of these, 909 (322 men and 587 women) had a Z-score ≥ + 4, i.e. a prevalence of 1.26% [1.18-1.34%]. The DXA scan reports and imagery and medical records of the 909 EBM patients were reviewed and 936 causes were found. In 42 patients (4%), no cause could be determined due to unavailability of data. Artefactual causes of EBM were found in 752 patients (80%), in whom the predominant cause was degenerative disease of the spine (613 patients, 65%). Acquired causes of focal EBM-including Paget's disease (n = 7)-were found in 12 patients (1%), and acquired causes of generalized EBM-including renal osteodystrophy (n = 32), haematological disorders (n = 20) and hypoparathyroidism (n = 15)-in 84 patients (9%). Other causes were rare hereditary diseases and unknown EBM in 19 (2%) and 27 (3%) cases respectively. CONCLUSIONS The prevalence of EBM was approximately 1 in 100. These findings suggest that degenerative disease of the spine is the main cause of EBM, but that acquired or hereditary diseases are also causal factors.
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Affiliation(s)
- J Paccou
- Rheumatology Unit, MABlab ULR 4490, Lille University Hospital, CHRU Lille, rue Emile Laine, 59037, Lille, France.
| | - R-M Javier
- Rheumatology Unit, Strasbourg University Hospital, Strasbourg, France
| | - I Henry-Desailly
- Rheumatology Unit, Picardie-Jules Verne University, Amiens Teaching Hospital, Amiens, France
| | - C Ternynck
- Lille University Hospital, CHRU Lille, ULR 2694-METRICS, F-59037, Lille, France
| | - A Nottez
- Rheumatology Unit, Lille University Hospital, CHRU Lille, 59037, Lille, France
| | - I Legroux-Gérot
- Rheumatology Unit, MABlab ULR 4490, Lille University Hospital, CHRU Lille, rue Emile Laine, 59037, Lille, France
| | - F Robin
- Rheumatology Unit, CHU de Rennes, Univ Rennes, INSERM, INRA, Institut NUMECAN (Nutrition Metabolisms and Cancer), UMR 1241, F-35000, Rennes, France
| | - P Fardellone
- Rheumatology Unit, Picardie-Jules Verne University, Amiens Teaching Hospital, Amiens, France
| | - E Lespessailles
- Rheumatology Unit, Regional Hospital of Orleans, EA 4708-I3MTO, University of Orleans, Orleans, France
| | - C Roux
- Rheumatology Unit, INSERM U1153 APHP Centre, Université de Paris, Paris, France
| | - P Guggenbuhl
- Rheumatology Unit, CHU de Rennes, Univ Rennes, INSERM, INRA, Institut NUMECAN (Nutrition Metabolisms and Cancer), UMR 1241, F-35000, Rennes, France
| | - S Kolta
- Rheumatology Unit, INSERM U1153 APHP Centre, Université de Paris, Paris, France
| | - B Cortet
- Rheumatology Unit, MABlab ULR 4490, Lille University Hospital, CHRU Lille, rue Emile Laine, 59037, Lille, France
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Mehta SD, Sebro R. Computer-Aided Detection of Incidental Lumbar Spine Fractures from Routine Dual-Energy X-Ray Absorptiometry (DEXA) Studies Using a Support Vector Machine (SVM) Classifier. J Digit Imaging 2021; 33:204-210. [PMID: 31062114 DOI: 10.1007/s10278-019-00224-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
To assess whether application of a support vector machine learning algorithm to ancillary data obtained from posterior-anterior dual-energy X-ray absorptiometry (DEXA) studies could identify patients with lumbar spine (L1-L4) vertebral body fractures without additional DEXA imaging or radiation. Three hundred seven patients (199 without any fractures of the spine, and 108 patients with at least one fracture of the L1, L2, L3, or L4 vertebral bodies) who had DEXA studies were evaluated. Ancillary data from DEXA output was analyzed. The dataset was split into training (80%) and test (20%) datasets. Support vector machines (SVMs) with 10-fold cross-validation and different kernels were used to identify the best kernel based on the greatest area under the curve (AUC) and the best training vectors in the training dataset. The SVM with the best kernel was then applied to the test dataset to assess the accuracy of the SVM. Receiver operating characteristic (ROC) curves of the SVMs using different kernels in the test dataset were compared using DeLong's test. The SVM classifier with the linear kernel had the greatest AUC in the training dataset (AUC = 0.9258). The AUC of the SVM classifier with the linear kernel in the test dataset was 0.8963. The SVM classifier with the linear kernel had an overall average accuracy of 91.8% in the test dataset. The sensitivity, specificity, positive predictive value, and negative predictive of the SVM classifier with the linear kernel to detect lumbar spine fractures were 81.8%, 97.4%, 94.7%, and 90.5%, respectively. The SVM classifier with the linear kernel ROC curve had a significantly better AUC than the SVM classifier with the cubic polynomial kernel (P = 0.034) for discriminating between patients with lumbar spine fractures and control patients, but not significantly different from the SVM classifier with a radial basis function (RBF) kernel (P = 0.317) or the SVM classifier with a sigmoid kernel (P = 0.729). All fractures identified by the SVM classifiers were not prospectively identified by the radiologist. SVM analysis of ancillary data obtained from routine DEXA studies can identify lumbar spine fractures without the use of vertebral fracture assessment (VFA) DEXA imaging or radiation, and identify fractures missed by radiologists.
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Affiliation(s)
- Samir D Mehta
- Department of Radiology, University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Ronnie Sebro
- Department of Radiology, University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA.
- Department of Orthopedic Surgery, University of Pennsylvania, 3737 Market Street, Philadelphia, PA, 19104, USA.
- Department of Genetics, University of Pennsylvania, 421 Marie Curie Blvd, Philadelphia, PA, 19104, USA.
- Department of Epidemiology, Biostatistics and Bioinformatics, University of Pennsylvania, 421 Marie Curie Blvd, Philadelphia, PA, 19104, USA.
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22
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Li YC, Chen HH, Horng-Shing Lu H, Hondar Wu HT, Chang MC, Chou PH. Can a Deep-learning Model for the Automated Detection of Vertebral Fractures Approach the Performance Level of Human Subspecialists? Clin Orthop Relat Res 2021; 479:1598-1612. [PMID: 33651768 PMCID: PMC8208416 DOI: 10.1097/corr.0000000000001685] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/27/2021] [Indexed: 01/31/2023]
Abstract
BACKGROUND Vertebral fractures are the most common osteoporotic fractures in older individuals. Recent studies suggest that the performance of artificial intelligence is equal to humans in detecting osteoporotic fractures, such as fractures of the hip, distal radius, and proximal humerus. However, whether artificial intelligence performs as well in the detection of vertebral fractures on plain lateral spine radiographs has not yet been reported. QUESTIONS/PURPOSES (1) What is the accuracy, sensitivity, specificity, and interobserver reliability (kappa value) of an artificial intelligence model in detecting vertebral fractures, based on Genant fracture grades, using plain lateral spine radiographs compared with values obtained by human observers? (2) Do patients' clinical data, including the anatomic location of the fracture (thoracic or lumbar spine), T-score on dual-energy x-ray absorptiometry, or fracture grade severity, affect the performance of an artificial intelligence model? (3) How does the artificial intelligence model perform on external validation? METHODS Between 2016 and 2018, 1019 patients older than 60 years were treated for vertebral fractures in our institution. Seventy-eight patients were excluded because of missing CT or MRI scans (24% [19]), poor image quality in plain lateral radiographs of spines (54% [42]), multiple myeloma (5% [4]), and prior spine instrumentation (17% [13]). The plain lateral radiographs of 941 patients (one radiograph per person), with a mean age of 76 ± 12 years, and 1101 vertebral fractures between T7 and L5 were retrospectively evaluated for training (n = 565), validating (n = 188), and testing (n = 188) of an artificial intelligence deep-learning model. The gold standard for diagnosis (ground truth) of a vertebral fracture is the interpretation of the CT or MRI reports by a spine surgeon and a radiologist independently. If there were any disagreements between human observers, the corresponding CT or MRI images would be rechecked by them together to reach a consensus. For the Genant classification, the injured vertebral body height was measured in the anterior, middle, and posterior third. Fractures were classified as Grade 1 (< 25%), Grade 2 (26% to 40%), or Grade 3 (> 40%). The framework of the artificial intelligence deep-learning model included object detection, data preprocessing of radiographs, and classification to detect vertebral fractures. Approximately 90 seconds was needed to complete the procedure and obtain the artificial intelligence model results when applied clinically. The accuracy, sensitivity, specificity, interobserver reliability (kappa value), receiver operating characteristic curve, and area under the curve (AUC) were analyzed. The bootstrapping method was applied to our testing dataset and external validation dataset. The accuracy, sensitivity, and specificity were used to investigate whether fracture anatomic location or T-score in dual-energy x-ray absorptiometry report affected the performance of the artificial intelligence model. The receiver operating characteristic curve and AUC were used to investigate the relationship between the performance of the artificial intelligence model and fracture grade. External validation with a similar age population and plain lateral radiographs from another medical institute was also performed to investigate the performance of the artificial intelligence model. RESULTS The artificial intelligence model with ensemble method demonstrated excellent accuracy (93% [773 of 830] of vertebrae), sensitivity (91% [129 of 141]), and specificity (93% [644 of 689]) for detecting vertebral fractures of the lumbar spine. The interobserver reliability (kappa value) of the artificial intelligence performance and human observers for thoracic and lumbar vertebrae were 0.72 (95% CI 0.65 to 0.80; p < 0.001) and 0.77 (95% CI 0.72 to 0.83; p < 0.001), respectively. The AUCs for Grades 1, 2, and 3 vertebral fractures were 0.919, 0.989, and 0.990, respectively. The artificial intelligence model with ensemble method demonstrated poorer performance for discriminating normal osteoporotic lumbar vertebrae, with a specificity of 91% (260 of 285) compared with nonosteoporotic lumbar vertebrae, with a specificity of 95% (222 of 234). There was a higher sensitivity 97% (60 of 62) for detecting osteoporotic (dual-energy x-ray absorptiometry T-score ≤ -2.5) lumbar vertebral fractures, implying easier detection, than for nonosteoporotic vertebral fractures (83% [39 of 47]). The artificial intelligence model also demonstrated better detection of lumbar vertebral fractures compared with detection of thoracic vertebral fractures based on the external dataset using various radiographic techniques. Based on the dataset for external validation, the overall accuracy, sensitivity, and specificity on bootstrapping method were 89%, 83%, and 95%, respectively. CONCLUSION The artificial intelligence model detected vertebral fractures on plain lateral radiographs with high accuracy, sensitivity, and specificity, especially for osteoporotic lumbar vertebral fractures (Genant Grades 2 and 3). The rapid reporting of results using this artificial intelligence model may improve the efficiency of diagnosing vertebral fractures. The testing model is available at http://140.113.114.104/vght_demo/corr/. One or multiple plain lateral radiographs of the spine in the Digital Imaging and Communications in Medicine format can be uploaded to see the performance of the artificial intelligence model. LEVEL OF EVIDENCE Level II, diagnostic study.
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Affiliation(s)
- Yi-Chu Li
- Institute of Data Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan
| | - Hung-Hsun Chen
- Center of Teaching and Learning Development, National Chiao Tung University, Hsinchu, Taiwan
| | | | - Hung-Ta Hondar Wu
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ming-Chau Chang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
- Department of Orthopedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Po-Hsin Chou
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
- Department of Orthopedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan
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23
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Ladd LM, Imel EA, Niziolek PJ, Liu Z, Warden SJ, Liang Y, Econs MJ. Radiographic imaging, densitometry and disease severity in Autosomal dominant osteopetrosis type 2. Skeletal Radiol 2021; 50:903-913. [PMID: 33009917 PMCID: PMC8009803 DOI: 10.1007/s00256-020-03625-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/21/2020] [Accepted: 09/21/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To characterize relationships between quantitative computed tomography bone mineral density measurements and other qualitative and quantitative imaging measures, as well as clinical metrics, in patients with autosomal dominant osteopetrosis type 2 (ADO2). MATERIALS AND METHODS Clinical and radiologic parameters of 9 adults and 3 children with autosomal dominant osteopetrosis type 2 were assessed including lumbar spine quantitative computed tomography (QCT), radiographic skeletal survey (skull base thickening; Erlenmeyer flask deformity; endobone pattern; and spine density pattern (endplate sclerosis, "anvil" appearance, or diffuse sclerosis)), dual-energy x-ray absorptiometry (DXA), tibial peripheral quantitative computed tomography (pQCT) volumetric bone mineral density (vBMD), bone turnover markers, and bone marrow failure or visual impairment. RESULTS The skeletal parameter most divergent from normal was lumbar spine QCT Z-score (+ 3.6 to + 38.7). Lumbar QCT Z-score correlated positively with pQCT tibial diaphysis vBMD (Pearson correlation r = 0.73, p = 0.02) and pQCT tibial metaphysis vBMD (r = 0.87, p < 0.01). A trend towards positive lumbar QCT Z-score correlation with serum P1NP/CTX ratio (r = 0.54, p = 0.10) and lumbar DXA Z-score (r = 0.55, p = 0.10) were observed. Bone marrow failure and vision impairment occurred in those with most severe quantitative and qualitative measures, while those with less severe radiographic features had the lowest QCT Z-scores. CONCLUSION Lumbar spine QCT provided the most extreme skeletal assessment in ADO2, which correlated positively with other radiologic and clinical markers of disease severity. Given the quantification of trabecular bone and greater variation from normal with wider range of values, lumbar QCT Z-scores may be useful to determine or detect impact of future treatments.
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Affiliation(s)
- Lauren M. Ladd
- Indiana University School of Medicine, Department of Radiology & Imaging Sciences,Indiana University, Indiana Center for Musculoskeletal Health
| | - Erik A. Imel
- Indiana University, Indiana Center for Musculoskeletal Health,Indiana University School of Medicine, Department of Medicine,Indiana University School of Medicine, Department of Pediatrics
| | - Paul J. Niziolek
- Indiana University School of Medicine, Department of Radiology & Imaging Sciences,Indiana University, Indiana Center for Musculoskeletal Health
| | - Ziyue Liu
- Indiana University, Indiana Center for Musculoskeletal Health,Indiana University, School of Public Health, Department of Biostatistics
| | - Stuart J. Warden
- Indiana University, Indiana Center for Musculoskeletal Health,Indiana University, School of Health and Human Sciences, Department of Physical Therapy,La Trobe University, La Trobe Sport and Exercise Medicine Centre
| | - Yun Liang
- Indiana University School of Medicine, Department of Radiology & Imaging Sciences
| | - Michael J. Econs
- Indiana University, Indiana Center for Musculoskeletal Health,Indiana University School of Medicine, Department of Medicine,Indiana University School of Medicine, Department of Medical and Molecular Genetics
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24
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Donohue NK, Braza DW. A Rare Case of Nontraumatic Thoracic Compression Fracture in a 28-Year-Old Man. Am J Phys Med Rehabil 2021; 100:e29-e31. [PMID: 32618750 DOI: 10.1097/phm.0000000000001513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT A 28-yr-old African American man with a history of synovitis, acne, pustulosis, hyperostosis, and osteitis syndrome, tobacco use, and sickle cell trait was referred to a physiatrist at a multidisciplinary spine center with a 1-yr history of nontraumatic thoracic back pain that had significantly worsened over the previous 4 wks. In the context of recurrent infections requiring hospital admissions and the patient's immunosuppressed status, magnetic resonance imaging of his thoracic spine was obtained, showing an acute or subacute anterior compression deformity of the T7 vertebral body. He was subsequently provided with a hyperextension brace, physical therapy referral, and a trial of intranasal calcitonin. The patient reported significant improvement in pain at his 3-mo follow-up appointment and continued to show pain and functional improvement in physical therapy sessions up to 6 mos later.
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Affiliation(s)
- Nicholas K Donohue
- From the Department of Physical Medicine and Rehabilitation, Medical College of Wisconsin, Milwaukee, Wisconsin
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25
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Affiliation(s)
- L Tripto-Shkolnik
- Division of Endocrinology, Diabetes and Metabolism, Chaim Sheba Medical Center, Tel-Hashomer, Ramat Gan, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Y Liel
- The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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26
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Xu Y, Wu Q. Trends in osteoporosis and mean bone density among type 2 diabetes patients in the US from 2005 to 2014. Sci Rep 2021; 11:3693. [PMID: 33580184 PMCID: PMC7881186 DOI: 10.1038/s41598-021-83263-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 01/14/2021] [Indexed: 12/19/2022] Open
Abstract
This study aimed to examine how bone health changed among T2DM patients in the past decade. Continuous National Health and Nutrition Examination Survey (NHANES) data from 2005-2006 to 2013-2014 were analyzed to examine the trends of bone mineral density (BMD) and the prevalence trends of osteoporosis osteopenia among T2DM patients and non-diabetic people aged 40 years and older. The age- and BMI-adjusted mean BMD of the femur neck for the four NHANES cycles decreased linearly in both T2DM patients and non-diabetic people (both Plinear trend ≤ 0.009). Among women with T2DM, the mean BMD in 2013-2014 was significantly lower than that in 2005-2006, even after adjusting for multiple covariates. During 2005-2014, the prevalence of osteoporosis among T2DM patients and non-diabetic people increased but with no significant linear trend (both Plinear trend > 0.05), while the prevalence of osteopenia in the two populations increased linearly (both Plinear trend < 0.04). Age- and BMI-adjusted mean BMD decreased in 2013-2014 in patients with T2DM and non-diabetic people, while the prevalence of osteoporosis and osteopenia increased in both groups.
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Affiliation(s)
- Yingke Xu
- Department of Epidemiology and Biostatistics, School of Public Health, University of Nevada, Las Vegas, Las Vegas, NV, 89154, USA
- Nevada Institute of Personalized Medicine, College of Science, University of Nevada, Las Vegas, Las Vegas, NV, 89154, USA
| | - Qing Wu
- Department of Epidemiology and Biostatistics, School of Public Health, University of Nevada, Las Vegas, Las Vegas, NV, 89154, USA.
- Nevada Institute of Personalized Medicine, College of Science, University of Nevada, Las Vegas, Las Vegas, NV, 89154, USA.
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27
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Salazar-Silva R, Dantas VLG, Alves LU, Batissoco AC, Oiticica J, Lawrence EA, Kawafi A, Yang Y, Nicastro FS, Novaes BC, Hammond C, Kague E, Mingroni-Netto RC. NCOA3 identified as a new candidate to explain autosomal dominant progressive hearing loss. Hum Mol Genet 2021; 29:3691-3705. [PMID: 33326993 PMCID: PMC7823111 DOI: 10.1093/hmg/ddaa240] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 09/21/2020] [Accepted: 10/15/2020] [Indexed: 12/27/2022] Open
Abstract
Hearing loss is a frequent sensory impairment in humans and genetic factors account for an elevated fraction of the cases. We have investigated a large family of five generations, with 15 reported individuals presenting non-syndromic, sensorineural, bilateral and progressive hearing loss, segregating as an autosomal dominant condition. Linkage analysis, using SNP-array and selected microsatellites, identified a region of near 13 cM in chromosome 20 as the best candidate to harbour the causative mutation. After exome sequencing and filtering of variants, only one predicted deleterious variant in the NCOA3 gene (NM_181659, c.2810C > G; p.Ser937Cys) fit in with our linkage data. RT-PCR, immunostaining and in situ hybridization showed expression of ncoa3 in the inner ear of mice and zebrafish. We generated a stable homozygous zebrafish mutant line using the CRISPR/Cas9 system. ncoa3-/- did not display any major morphological abnormalities in the ear, however, anterior macular hair cells showed altered orientation. Surprisingly, chondrocytes forming the ear cartilage showed abnormal behaviour in ncoa3-/-, detaching from their location, invading the ear canal and blocking the cristae. Adult mutants displayed accumulation of denser material wrapping the otoliths of ncoa3-/- and increased bone mineral density. Altered zebrafish swimming behaviour corroborates a potential role of ncoa3 in hearing loss. In conclusion, we identified a potential candidate gene to explain hereditary hearing loss, and our functional analyses suggest subtle and abnormal skeletal behaviour as mechanisms involved in the pathogenesis of progressive sensory function impairment.
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Affiliation(s)
- R Salazar-Silva
- Centro de Pesquisas sobre o Genoma Humano e Células-Tronco, Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, 05508-090, São Paulo, Brazil
| | - Vitor Lima Goes Dantas
- Centro de Pesquisas sobre o Genoma Humano e Células-Tronco, Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, 05508-090, São Paulo, Brazil
| | - Leandro Ucela Alves
- Centro de Pesquisas sobre o Genoma Humano e Células-Tronco, Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, 05508-090, São Paulo, Brazil
| | - Ana Carla Batissoco
- Centro de Pesquisas sobre o Genoma Humano e Células-Tronco, Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, 05508-090, São Paulo, Brazil
- Laboratório de Otorrinolaringologia/LIM32 –Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo , 01246-903, São Paulo, Brazil
| | - Jeanne Oiticica
- Laboratório de Otorrinolaringologia/LIM32 –Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo , 01246-903, São Paulo, Brazil
| | - Elizabeth A Lawrence
- School of Pharmacology, Physiology and Neuroscience, University of Bristol, Bristol, BS8 1TD, United Kingdom
| | - Abdelwahab Kawafi
- School of Pharmacology, Physiology and Neuroscience, University of Bristol, Bristol, BS8 1TD, United Kingdom
| | - Yushi Yang
- School of Physics, University of Bristol, Bristol, BS8 1TL, United Kingdom
- Centre for Nanoscience and Quantum Information, University of Bristol, Bristol, BS8 1FD, United Kingdom
- Bristol Centre for Functional Nanomaterials, University of Bristol, Bristol, BS8 1FD, United Kingdom
| | - Fernanda Stávale Nicastro
- Divisão de Educação e Reabilitação dos Distúrbios da Comunicação da Pontifícia Universidade Católica de São Paulo, 04022-040, São Paulo, Brazil
| | - Beatriz Caiuby Novaes
- Divisão de Educação e Reabilitação dos Distúrbios da Comunicação da Pontifícia Universidade Católica de São Paulo, 04022-040, São Paulo, Brazil
| | - Chrissy Hammond
- School of Pharmacology, Physiology and Neuroscience, University of Bristol, Bristol, BS8 1TD, United Kingdom
| | - Erika Kague
- Centro de Pesquisas sobre o Genoma Humano e Células-Tronco, Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, 05508-090, São Paulo, Brazil
- School of Pharmacology, Physiology and Neuroscience, University of Bristol, Bristol, BS8 1TD, United Kingdom
| | - R C Mingroni-Netto
- Centro de Pesquisas sobre o Genoma Humano e Células-Tronco, Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, 05508-090, São Paulo, Brazil
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Beavers KM, Greene KA, Yu EW. MANAGEMENT OF ENDOCRINE DISEASE: Bone complications of bariatric surgery: updates on sleeve gastrectomy, fractures, and interventions. Eur J Endocrinol 2020; 183:R119-R132. [PMID: 32869608 PMCID: PMC8254876 DOI: 10.1530/eje-20-0548] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/29/2020] [Indexed: 12/11/2022]
Abstract
Despite well recognized improvements in obesity-related comorbidities, increasing evidence implicates bariatric surgery in the onset of adverse skeletal health outcomes. The purpose of this review is to provide a focused update in three critical areas: (i) emergent data on sleeve gastrectomy and bone loss, (ii) evidence linking bariatric surgery to incident fracture, and (iii) intervention strategies designed to mitigate surgical bone loss. Better understanding of these issues will inform our treatment of skeletal health for patients planning bariatric surgery.
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Affiliation(s)
- Kristen M. Beavers
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA
| | - Katelyn A. Greene
- Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Elaine W. Yu
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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29
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Kasher M, Williams FMK, Freidin MB, Cherny S, Livshits G. An in-depth study of the associations between osteoarthritis- and osteoporosis-related phenotypes at different skeletal locations. Osteoporos Int 2020; 31:2197-2208. [PMID: 32556517 DOI: 10.1007/s00198-020-05504-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/12/2020] [Indexed: 01/01/2023]
Abstract
UNLABELLED The relationship between OA and osteoporosis characteristics remains controversial. This study revealed that age-adjusted hand OA is associated with lower hand/arm BMD levels. Wrist fracture occurrence is associated with increased OA hand scores and low arm BMD. Conversely, age-adjusted knee and spine OA is associated with high spine, hip, and total BMDs. INTRODUCTION Osteoarthritis (OA) and osteoporosis are two common musculoskeletal diseases which contribute a high burden of disability, yet assessments of their relationship remains controversial. The aim of this study was to clarify the association between bone mineral densities (BMD) of the hand, arm, spine, hip, and total body, and OA of the hand and knee and lumbar disc degeneration in two different ethnic groups. METHODS Radiographic assessments of the hand, knee, and spine were collected and coded for joint space narrowing, osteophytes, and the Kellgren-Lawrence score from Chuvashian (n = 1504) and British (n = 2280) individuals. BMD measurements of standard skeletal sites were estimated by dual X-ray absorptiometry. Age- and familial-adjusted regression analyses were conducted to determine associations. RESULTS Knee OA affection was positively associated with elevated hip, spine, and total body BMD levels (p < 0.001). Additionally, disc degeneration phenotypes showed significant positive associations with the hip, spine, and total BMD (p < 0.001). However, increased hand OA scores was significantly negatively correlated with arm and hand BMD measurements in males and females in both samples (p < 0.001). Additionally, higher hand OA scores were significantly associated with wrist fracture. CONCLUSIONS We discovered a clear pattern of association between hand OA and low hand and arm BMD, with increased risk of wrist fracture, as well as reproducing previous associations between knee and spine OA and elevated spine, hip, and total body BMD. It appears that hand OA manifests differently in comparison to hip and knee OA.
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Affiliation(s)
- M Kasher
- Human Population Biology Research Unit, Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Aviv, Tel Aviv, Israel
| | - F M K Williams
- Department of Twin Research and Genetic Epidemiology, School of Life Course Sciences, King's College London, London, UK
| | - M B Freidin
- Department of Twin Research and Genetic Epidemiology, School of Life Course Sciences, King's College London, London, UK
| | - S Cherny
- Human Population Biology Research Unit, Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Aviv, Tel Aviv, Israel
- Department of Epidemiology and Preventive Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - G Livshits
- Human Population Biology Research Unit, Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Aviv, Tel Aviv, Israel.
- Department of Twin Research and Genetic Epidemiology, School of Life Course Sciences, King's College London, London, UK.
- Adelson Medical School, Ariel University, Ariel, Israel.
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Abstract
The phenotypic trait of high bone mass (HBM) is an excellent example of the nexus between common and rare disease genetics. HBM may arise from carriage of many 'high bone mineral density [BMD]'-associated alleles, and certainly the genetic architecture of individuals with HBM is enriched with high BMD variants identified through genome-wide association studies of BMD. HBM may also arise as a monogenic skeletal disorder, due to abnormalities in bone formation, bone resorption, and/or bone turnover. Individuals with monogenic disorders of HBM usually, though not invariably, have other skeletal abnormalities (such as mandible enlargement) and thus are best regarded as having a skeletal dysplasia rather than just isolated high BMD. A binary etiological division of HBM into polygenic vs. monogenic, however, would be excessively simplistic: the phenotype of individuals carrying rare variants of large effect can still be modified by their common variant polygenic background, and by the environment. HBM disorders-whether predominantly polygenic or monogenic in origin-are not only interesting clinically and genetically: they provide insights into bone processes that can be exploited therapeutically, with benefits both for individuals with these rare bone disorders and importantly for the many people affected by the commonest bone disease worldwide-i.e., osteoporosis. In this review we detail the genetic architecture of HBM; we provide a conceptual framework for considering HBM in the clinical context; and we discuss monogenic and polygenic causes of HBM with particular emphasis on anabolic causes of HBM.
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Affiliation(s)
- Celia L. Gregson
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
| | - Emma L. Duncan
- Department of Twin Research & Genetic Epidemiology, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
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Computed Tomography Diagnostic of Uncommon Case of Osteopetrosis in 80-Year-Old Man-Case Report. MEDICINA-LITHUANIA 2020; 56:medicina56100518. [PMID: 33023136 PMCID: PMC7601162 DOI: 10.3390/medicina56100518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 09/28/2020] [Accepted: 09/29/2020] [Indexed: 11/16/2022]
Abstract
Background and Objectives: During osteopetrosis course, impaired bone remodeling induces skeletal osteosclerosis and abnormally dense bones, which, however, are brittle and susceptible to low-energy fractures. In this study, radiological evaluation and densitometric measurements of several bones of the skeleton in one of the oldest patients in the world suffering from osteopetrosis was presented. Materials and Methods: Volumetric bone mineral density measurements of the examined bones in an 80-year-old man were performed using two different quantitative computed tomography techniques. Results: The obtained results show higher values of the volumetric bone mineral density of the trabecular bone in lumbar spine than in the cortical bone compartment. T-score and Z-score in this patient reached values of 27–28 and 31–32, respectively. Conclusions: The obtained densitometric data may serve for further diagnostic purposes of osteopetrosis. As documented, the severity of the osteosclerotic changes of bones were higher in this patient than in most other described cases. Moreover, radiological signs diagnosed in this patient were characteristic for all types of osteopetrosis making this case very uncommon.
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Indirli R, Messina C, Longhi M, Guabello G, Corbetta S. Bone Features of Unaffected Skeletal Sites in Melorheostosis: A Case Report. J Clin Densitom 2020; 23:690-694. [PMID: 32057643 DOI: 10.1016/j.jocd.2020.01.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 12/22/2019] [Accepted: 01/06/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Melorheostosis is a rare sporadic sclerosing bone dysplasia, which commonly affects appendicular skeleton with bone hyperostosis and soft tissues sclerosis; fragility fractures are rare in melorheostotic patients. We investigated bone features at unaffected sites in a postmenopausal woman with melorheostosis of the right lower limb and with a fracture of the melorheostosis-free T11 vertebral. METHODOLOGY Melorheostotic lesions were evaluated by plain radiography, magnetic resonance of the right lower limb, and whole-body bone scintigraphy. Dual X-ray absorptiometry, trabecular bone score, and quantitative computed tomography were performed to investigate unaffected bone sites. Biochemical assessment of bone metabolism was obtained. RESULTS Dual X-ray absorptiometry was indicative of normal mineralization at femoral sites and osteopenia at lumbar spine (T-score -1.1), which was confirmed by spinal quantitative computed tomography (volumetric bone mineral density 89 mg/cm3). Trabecular bone score suggested only mildly altered bone microarchitecture (1.304, normal values >1.350). Bone markers were consistent with high bone turnover. Causes of secondary osteoporosis or alterations in bone metabolism were excluded. Zoledronic acid induced a reduction in bone turnover markers after 6 months without significant changes in clinical features. CONCLUSIONS Fragility fractures at apparently unaffected sites may occur in adults with melorheostosis, in absence of significant demineralization diagnosed by dual X-ray absorptiometry, trabecular bone score, and quantitative computed tomography, which may underestimate the fracture risk in this set of patients. Treatment with zoledronate could be considered also to prevent fragility fractures.
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Affiliation(s)
- Rita Indirli
- Department of Clinical Sciences and Community Health, University of Milan, Milan, MI, Italy; Endocrinology Unit, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Milan, MI, Italy
| | - Carmelo Messina
- Department of Biomedical Sciences for Health, University of Milan, Milan, MI, Italy; Radiology Unit, IRCCS Istituto Ortopedico Galeazzi, Milan, MI, Italy
| | - Matteo Longhi
- Rheumatology Unit, IRCCS Istituto Ortopedico Galeazzi, Milan, MI, Italy
| | - Gregorio Guabello
- Rheumatology Unit, IRCCS Istituto Ortopedico Galeazzi, Milan, MI, Italy
| | - Sabrina Corbetta
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, MI, Italy; Endocrinology and Diabetology Service, IRCCS Istituto Ortopedico Galeazzi, Milan, MI, Italy.
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Nottez A, Kolta S, Lion G, Ternynck C, Legroux-Gérot I, Vantyghem MC, Cortet B, Paccou J. Prevalence and causes of elevated bone mass. Bone 2020; 138:115476. [PMID: 32534222 DOI: 10.1016/j.bone.2020.115476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/13/2020] [Accepted: 06/08/2020] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Reports of elevated bone mass (EBM) on routine DXA scanning are not infrequent. However, epidemiological studies of EBM are few in number and definition thresholds variable. The purpose of this study was to assess the prevalence and causes of EBM in the general population referred to a single university hospital - catering for a population of 4 million inhabitants - for DXA scanning. MATERIAL AND METHODS DXA databases were initially searched for individuals with a bone mineral density (BMD) Z-score ≥+4 at any site in the lumbar spine or hip from April 1st, 2008 to April 30st, 2018. Two Hologic scanners were available at the Lille University Hospital (France). Prevalence of EBM was evaluated, as were causes associated with EBM. RESULTS At the lumbar spine, 18,229 bone density tests were performed in women and 10,209 in men. At the hip, 17,390 tests were performed in women and 9857 in men. The total number of patients who had at least one bone density test was 14,745, of which 64.2% were female. Of these 14,745 patients, 211 had a Z-score ≥+4 at any site, i.e. a prevalence of 1.43% [1.25%-1.64%]. The DXA scans and medical records of 92 men and 119 women with elevated BMD were reviewed to assess causes. An artefactual cause was found in 164 patients (75%) with EBM (mostly degenerative disease of the spine), and an acquired cause of focal EBM was found in only 2 patients, both of whom had sclerotic bone metastases from prostate cancer. An acquired cause of generalized EBM was found in 32 patients (15%), the vast majority of whom had renal osteodystrophy (n = 11), followed by hematological disorders (n = 9; e.g. myeloproliferative syndromes and mastocytosis) and diffuse bone metastases from solid cancer (n = 5). Of the remaining causes, rare hereditary diseases (e.g. osteopetrosis…) and unexplained EBM were found in 10 and 6 cases respectively. CONCLUSION The prevalence of EBM (Z-score ≥+4 at any site) was 1.43% [1.25%-1.64%]. In nearly all instances (97.1%) the explanation for EBM could be found in the medical record and through conventional investigations. This study suggests that the main cause of EBM is degenerative disease of the spine. Further studies are needed to differentiate artefactual EBM from hereditary or acquired EBM, and to investigate unexplained EBM. Genetic testing may prove useful in elucidating rare unknown causes.
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Affiliation(s)
- Aurore Nottez
- Univ. Lille, CHU Lille, Department of Rheumatology, 59000 Lille, France
| | - Sami Kolta
- INSERM UMR-1153, Paris, Department of Rheumatology, Assistance Publique-Hôpitaux de Paris, Centre-Université de Paris, Paris, France; INSERM UMR-1153, Paris, France
| | - Georges Lion
- Univ. Lille, CHU Lille, Department of Nuclear Medicine, 59000 Lille, France
| | - Camille Ternynck
- Univ. Lille, CHU Lille, ULR 2694 - METRICS: Évaluation des Technologies de Santé et des Pratiques Médicales, F-59000 Lille, France
| | - Isabelle Legroux-Gérot
- Univ. Lille, CHU Lille, MABLab ULR 4490, Department of Rheumatology, 59000 Lille, France
| | - Marie-Christine Vantyghem
- Univ. Lille, CHU Lille, Department of Endocrinology, Diabetology, Metabolism, Nutrition, 59000 Lille, France
| | - Bernard Cortet
- Univ. Lille, CHU Lille, MABLab ULR 4490, Department of Rheumatology, 59000 Lille, France
| | - Julien Paccou
- Univ. Lille, CHU Lille, MABLab ULR 4490, Department of Rheumatology, 59000 Lille, France.
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Frost M, Rahbek ET, Ejersted C, Høilund-Carlsen PF, Bygum A, Thomsen JS, Andreasen CM, Andersen TL, Frederiksen AL. Modeling-based bone formation transforms trabeculae to cortical bone in the sclerotic areas in Buschke-Ollendorff syndrome. A case study of two females with LEMD3 variants. Bone 2020; 135:115313. [PMID: 32151766 DOI: 10.1016/j.bone.2020.115313] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/02/2020] [Accepted: 03/06/2020] [Indexed: 12/11/2022]
Abstract
Buschke-Ollendorff syndrome is a rare autosomal dominant condition caused by pathogenic variants in LEMD3 and characterized by connective tissue nevi and sclerotic bone abnormalities known as osteopoikilosis. The bone phenotype in Buschke-Ollendorff syndrome including osteopoikilosis remains unclear. We investigated bone turnover markers, pelvis and crura X-rays; lumbar spine and femoral neck DXA; bone activity by NaF-PET/CT, bone structure by μCT and dynamic histomorphometry in adults with Buschke-Ollendorff syndrome. Two women aged 25 and 47 years with a BMI of 30 and 32 kg/m2, respectively, were included in the investigation. Bone turnover markers were within normal range. aBMD Z-scores were comparable to that of controls in the lumbar spine and increased at the hip. Radiographies exposed spotted areas in crura and pelvis, and NaF-PET/CT exposed abnormal pattern of irregular shaped NaF uptake in the entire skeleton. In both biopsies, μCT showed trabecular structure comparable to that of controls with stellate shaped sclerotic noduli within the cavity and on the endocortex. Histomorphometric analyses of the sclerotic lesions revealed compact lamellar bone with a normal bone remodeling rate, but partly replaced by modeling-based bone formation. Woven bone was not observed in the nodules. Therefore, while bone turnover and BMD were largely within normal reference range in patients with the Buschke-Ollendorff syndrome, osteosclerotic lesions appear to emerge due to modeling-based bone formation with secondary bone remodeling. These observations indicate that LEMD3 may be important for the activation of bone lining cells leading to modeling-based bone formation.
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Affiliation(s)
- M Frost
- Dept. of Endocrinology, Odense University Hospital, J.B. Winsloews Vej 4, DK-5000 Odense C, Denmark; Steno Diabetes Center Odense, J.B. Winsløws Vej 4, DK-5000 Odense C, Denmark; Dept. of Clinical Research, Faculty of Health, University of Southern Denmark, J.B. Winsloews vej 19, DK-5000 Odense C, Denmark.
| | - E T Rahbek
- Dept. of Clinical Genetics, Odense University Hospital, J.B. Winsloews Vej 4, DK-5000 Odense C, Denmark.
| | - C Ejersted
- Dept. of Endocrinology, Odense University Hospital, J.B. Winsloews Vej 4, DK-5000 Odense C, Denmark.
| | - P F Høilund-Carlsen
- Dept. of Clinical Research, Faculty of Health, University of Southern Denmark, J.B. Winsloews vej 19, DK-5000 Odense C, Denmark; Dept. of Nuclear Medicine, Odense University Hospital, J.B. Winsloews Vej 4, DK-5000 Odense C, Denmark.
| | - A Bygum
- Dept. of Clinical Research, Faculty of Health, University of Southern Denmark, J.B. Winsloews vej 19, DK-5000 Odense C, Denmark; Dept. of Dermatology and Allergy Centre, Odense University Hospital, J.B. Winsloews Vej 4, DK-5000 Odense C, Denmark.
| | - J S Thomsen
- Dept. of Biomedicine, Aarhus University, Wilhelm Meyers Allé, DK-8000 Aarhus C, Denmark..
| | - C M Andreasen
- Clinical Cell Biology, Pathology Research Unit, Odense University Hospital, J. B Winsloews Vej 25, DK-5000 Odense C, Denmark; Dept. of Molecular Medicine, University of Southern Denmark, J. B Winsloews Vej 25, DK-5000 Odense C, Denmark; Dept. of Clinical Research, University of Southern Denmark, J. B Winsloews Vej 25, DK-5000 Odense C, Denmark.
| | - T L Andersen
- Clinical Cell Biology, Pathology Research Unit, Odense University Hospital, J. B Winsloews Vej 25, DK-5000 Odense C, Denmark; Dept. of Molecular Medicine, University of Southern Denmark, J. B Winsloews Vej 25, DK-5000 Odense C, Denmark; Dept. of Forensic Medicine, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, DK-8200 Aarhus N, Denmark; Dept. of Clinical Research, University of Southern Denmark, J. B Winsloews Vej 25, DK-5000 Odense C, Denmark.
| | - A L Frederiksen
- Dept. of Clinical Research, Faculty of Health, University of Southern Denmark, J.B. Winsloews vej 19, DK-5000 Odense C, Denmark; Dept. of Clinical Genetics, Odense University Hospital, J.B. Winsloews Vej 4, DK-5000 Odense C, Denmark.
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Shah N, Ekbote V, Khadilkar V, Khadilkar A. Distortion of dual energy X-ray images by faecal masses in a child with type 1 diabetes. BMJ Case Rep 2020; 13:13/5/e235312. [PMID: 32444445 DOI: 10.1136/bcr-2020-235312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Dual energy X-ray absorptiometry (DXA) scanning is the most common investigating modality used to assess bone mineral density (BMD). Conditions causing tissue calcification and artefacts such as metallic objects may mislead the results of the DXA scan. We present here a case of a child with diabetes where the DXA images were distorted by faecal lumps, leading to falsely elevated BMD and an error in interpretation of the DXA scans. Our case suggests that DXA software may not, at times, differentiate between bone and other high-attenuating material within the regions of interest. Thus, DXA images should also be visually examined and verified with the numeric data before report preparation in these patients.
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Affiliation(s)
- Nikhil Shah
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, India
| | - Veena Ekbote
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, India
| | - Vaman Khadilkar
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, India.,Interdisciplinary School of Health Sciences, Savitribai Phule Pune University, Pune, India
| | - Anuradha Khadilkar
- Department of Growth and Pediatric Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, Pune, India .,Interdisciplinary School of Health Sciences, Savitribai Phule Pune University, Pune, India
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Cai G, Otahal P, Cicuttini F, Wu F, Munugoda IP, Jones G, Aitken D. The association of subchondral and systemic bone mineral density with osteoarthritis-related joint replacements in older adults. Osteoarthritis Cartilage 2020; 28:438-445. [PMID: 32119971 DOI: 10.1016/j.joca.2020.02.832] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 02/12/2020] [Accepted: 02/18/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To describe the association of subchondral and systemic bone mineral density (BMD) with knee and hip replacements (KR and HR, respectively) due to osteoarthritis. DESIGN 1,095 participants (mean age 63 years, 51% female) were included. At baseline, subchondral BMD of the medial and lateral tibia in three regions of interest (ROI) for the right knee, and systemic BMD of the lumbar spine, femoral neck, total hip and whole-body, were measured using dual-energy X-ray absorptiometry. Subchondral BMD of the hip was not measured. Competing risk regression models were used to estimate sub-distribution hazard ratios (SHRs) of KR/HR per one standard deviation (SD) higher in BMD measures, with adjustment of potential confounders. RESULTS Over 12.2 years, 79 (7.2%) participants underwent a KR and 56 (5.1%) an HR due to osteoarthritis. For the right side, medial subchondral BMD in ROI-3 was associated with an increased risk of KR (SHR 1.95 per SD; 95% Confidence Interval [CI], 1.57 to 2.43). In contrast, systemic BMD was not associated with the risk of KR, but higher BMD at the lumbar spine (1.42, 1.07 to 1.88) and whole-body (1.29, 1.00 to 1.66) were associated with an increased risk of HR at both sides. CONCLUSIONS Subchondral BMD is positively associated with an increased risk of KR and systemic BMD with an increased risk of HR, suggesting a role of BMD in the progression of osteoarthritis.
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Affiliation(s)
- G Cai
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia.
| | - P Otahal
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia.
| | - F Cicuttini
- Department of Epidemiology and Preventive Medicine, Monash University Medical School, Melbourne, Victoria, Australia.
| | - F Wu
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia.
| | - I P Munugoda
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia.
| | - G Jones
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia.
| | - D Aitken
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia.
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Fischer J, Hans D, Lamy O, Marques-Vidal P, Vollenweider P, Aubry-Rozier B. "Inflammaging" and bone in the OsteoLaus cohort. IMMUNITY & AGEING 2020; 17:5. [PMID: 32158491 PMCID: PMC7057650 DOI: 10.1186/s12979-020-00177-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 02/27/2020] [Indexed: 12/15/2022]
Abstract
Background “Inflammaging” is a coined term that combines the processes of inflammation (within the normal range) and aging, since chronic, low-grade, systemic inflammation emerges with increasing age. Unlike high-level inflammation, with which deleterious effects on bone no longer need to be demonstrated, it is unclear whether inflammaging exerts deleterious effects on bone too. Method We assessed associations between inflammaging — measured via cytokine levels (high-sensitivity C-reactive protein (hs-CRP); interleukin-1β (IL-1β); interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α)) — and bone parameters (prevalent and incident fractures, bone mineral density (BMD) and trabecular bone score (TBS)) in 1390 postmenopausal women from the OsteoLaus study. Results Mean (±SD) age was 64.5 ± 7.6 and mean bone mass index (BMI) 25.9 ± 4.5 kg/m2. Median hs-CRP, IL-1β, IL-6 and TNF-α were 1.4 pg/ml, 0.57 pg/ml, 2.36 pg/ml and 4.82 pg/ml, respectively. In total, 10.50% of the participants had a prevalent, low-impact fracture; and, after 5-years of follow up, 5.91% had an incident, low-impact fracture. Mean T-score BMD was − 1.09 ± 1.53 for the spine, − 1.08 ± 1.02 for the femoral neck, and − 0.72 ± 0.96 for the total hip. Mean spine TBS was 1.320 ± 0.10. We found a positive association between hs-CRP and BMD at all sites, and between hs-CRP and the TBS, but none of these associations were significant after adjustment. We found no association between prevalent or incident fractures and hs-CRP. No association was found between IL-1β, IL6 and TNF-α and BMD, TBS or fractures. Conclusion Our results suggest that bone imaging and structure parameters are not associated with the low-grade cytokine levels (within the normal range) observed with inflammaging.
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Affiliation(s)
- Jessica Fischer
- 1Faculty of Biology and Medicine, Lausanne University, Unicentre, 1015 Lausanne, Switzerland
| | - Didier Hans
- 2Center for Bone Diseases, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Olivier Lamy
- 2Center for Bone Diseases, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland.,3Department of Internal Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Pedro Marques-Vidal
- 3Department of Internal Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Peter Vollenweider
- 3Department of Internal Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Bérengère Aubry-Rozier
- 4Division of Rheumatology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland.,2Center for Bone Diseases, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
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Riffel P, Schwaab J, Lutz C, Naumann N, Metzgeroth G, Fabarius A, Schoenberg SO, Hofmann WK, Valent P, Reiter A, Jawhar M. An increased bone mineral density is an adverse prognostic factor in patients with systemic mastocytosis. J Cancer Res Clin Oncol 2020; 146:945-951. [PMID: 31980928 PMCID: PMC7085471 DOI: 10.1007/s00432-019-03119-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 12/19/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE Systemic mastocytosis (SM) is characterized by the expansion of clonal mast cells that infiltrate various organ systems. The extent of organ infiltration and subsequent organ damage distinguishes between indolent SM (ISM) defined by a nearly normal life expectancy and advanced SM (AdvSM) defined by poor prognosis. In ISM, measurement of the bone mineral density (BMD) frequently reveals osteoporosis. In contrast, the clinical implication of an increased BMD and osteosclerosis remains unclear. METHODS BMD was evaluated in 61 patients with mastocytosis (ISM, n = 29, 48%; AdvSM, n = 32, 52%). We correlated the prevalence of osteoporosis, increased BMD and osteosclerosis with clinical parameters, disease variant and prognosis. RESULTS Osteoporosis was detected in 11/29 (38%) patients with ISM but only in 2/32 (6%) patients with AdvSM (p = 0.004). An increased BMD was detected in 1/29 (3%) patients with ISM and 24/32 (75%) patients with AdvSM (p < 0.001) while osteosclerosis was only detected in AdvSM patients (16/32, 50%). AdvSM patients with increased BMD had higher levels of bone marrow mast cell infiltration, higher serum tryptase and alkaline phosphatase levels compared to ISM as well as higher number of high-molecular risk mutations (p < 0.05). In addition, we found that the prognosis of AdvSM patients with increased BMD is inferior compared to those without increased BMD (median overall survival 3.6 years versus not reached, p = 0.031). CONCLUSIONS Osteoporosis is a common feature in ISM but not in AdvSM. An increased BMD is frequently present in AdvSM but not in ISM and is associated with more advanced disease and inferior outcome.
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Affiliation(s)
- Philipp Riffel
- Institute of Clinical Radiology and Nuclear Medicine, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Juliana Schwaab
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Christopher Lutz
- Institute of Clinical Radiology and Nuclear Medicine, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Nicole Naumann
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Georgia Metzgeroth
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Alice Fabarius
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Stefan O Schoenberg
- Institute of Clinical Radiology and Nuclear Medicine, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Wolf-Karsten Hofmann
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Andreas Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Mohamad Jawhar
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany.
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Bolboacă SD. Medical Diagnostic Tests: A Review of Test Anatomy, Phases, and Statistical Treatment of Data. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2019; 2019:1891569. [PMID: 31275427 PMCID: PMC6558629 DOI: 10.1155/2019/1891569] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 04/25/2019] [Accepted: 05/08/2019] [Indexed: 12/20/2022]
Abstract
Diagnostic tests are approaches used in clinical practice to identify with high accuracy the disease of a particular patient and thus to provide early and proper treatment. Reporting high-quality results of diagnostic tests, for both basic and advanced methods, is solely the responsibility of the authors. Despite the existence of recommendation and standards regarding the content or format of statistical aspects, the quality of what and how the statistic is reported when a diagnostic test is assessed varied from excellent to very poor. This article briefly reviews the steps in the evaluation of a diagnostic test from the anatomy, to the role in clinical practice, and to the statistical methods used to show their performances. The statistical approaches are linked with the phase, clinical question, and objective and are accompanied by examples. More details are provided for phase I and II studies while the statistical treatment of phase III and IV is just briefly presented. Several free online resources useful in the calculation of some statistics are also given.
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Affiliation(s)
- Sorana D. Bolboacă
- Department of Medical Informatics and Biostatistics, Iuliu Hațieganu University of Medicine and Pharmacy Cluj-Napoca, Louis Pasteur Str., No. 6, 400349 Cluj-Napoca, Romania
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Narayanan A, Cai A, Xi Y, Maalouf NM, Rubin C, Chhabra A. CT bone density analysis of low-impact proximal femur fractures using Hounsfield units. Clin Imaging 2019; 57:15-20. [PMID: 31102777 DOI: 10.1016/j.clinimag.2019.04.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/12/2019] [Accepted: 04/17/2019] [Indexed: 10/26/2022]
Abstract
AIM To quantify and compare changes in bone mineral density (BMD) via CT analysis in patients with and without spontaneous femoral fractures. MATERIALS AND METHODS Consecutive series of patients with CT imaging for spontaneous femoral fractures were compared to the age and gender matched controls. Bone density fixed region of interest measurements were obtained at the site of the fracture, proximally at the femoral head, and distally at the lesser trochanter in fracture patients and controls. Inter- and intrapatient comparisons were performed, including Chi-square and t-test analyses. RESULTS 24 spontaneous fractures and 25 controls were analyzed with no significant differences in mean age, gender, or body mass index. There were differences in the bone density between the fracture and contralateral non-fracture sides at (p = 0.0001) and distal (p < 0.0001) to the fracture. Proximal and distal bone density differences existed between case fracture and control non-fracture sites (p < 0.0001, p = 0.0001), and between the case non-fracture and control non-fracture sites (p < 0.0001, p < 0.0001). The reliability for measurements was good to excellent proximally (ICC = 0.63-0.87), moderate to excellent at the fracture site (ICC = 0.43-0.78), and fair to good distal (ICC = 0.24-0.68) to the fracture site. CONCLUSION Patients with spontaneous femoral fractures exhibit lower bone density than the asymptomatic controls. Bone insufficiency is best demonstrated proximal or distal to, rather than at the fracture site.
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Affiliation(s)
- Anish Narayanan
- Radiology Department, UT Southwestern Medical Center, Dallas, TX, USA.
| | - Anthony Cai
- Radiology Department, UT Southwestern Medical Center, Dallas, TX, USA
| | - Yin Xi
- Radiology Department, UT Southwestern Medical Center, Dallas, TX, USA
| | - Naim M Maalouf
- Division of Mineral Metabolism, Internal Medicine Department, UT Southwestern Medical Center, Dallas, TX, USA
| | - Craig Rubin
- Geriatrics, Internal Medicine Department, UT Southwestern Medical Center, Dallas, TX, USA
| | - Avneesh Chhabra
- Radiology Department, UT Southwestern Medical Center, Dallas, TX, USA; Orthopedics Department, UT Southwestern Medical Center, Dallas, TX, USA
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Hamood R, Hamood H, Merhasin I, Keinan-Boker L. Hormone therapy and osteoporosis in breast cancer survivors: assessment of risk and adherence to screening recommendations. Osteoporos Int 2019; 30:187-200. [PMID: 30413856 DOI: 10.1007/s00198-018-4758-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 10/30/2018] [Indexed: 02/07/2023]
Abstract
UNLABELLED The long-term impact of hormone therapy for breast cancer on risk of osteoporosis and the extent to which bone screening recommendations are implemented in daily practice remain unknown. We found that the aromatase inhibitor-induced risk of osteoporosis did not continue in the off-treatment follow-up. Adherence to screening recommendations was suboptimal. INTRODUCTION A case-cohort study was undertaken to better understand the impact of hormone therapy on breast cancer patients' risk of osteoporosis, and to estimate the extent to which current bone mineral density screening recommendations are implemented in real-life daily practice. METHODS This study is based on 1692 female breast cancer survivors recruited from "Leumit" healthcare fund, who were diagnosed with primary nonmetastatic invasive breast cancer between 2002 and 2012. A 20% random subcohort was sampled at baseline, and all osteoporosis cases were identified. Adjusted hazard ratios (HR) with 95% confidence intervals (CI) were estimated by weighted Cox proportional hazards models. RESULTS Of 1692 breast cancer survivors, 312 developed osteoporosis during a median follow-up of 5 years. The crude cumulative incidence of osteoporosis accounting for death as a competing risk was 25.7% (95% CI, 21.9-29.5%). In multivariable analyses, osteoporosis was positively associated with the aromatase inhibitor (AI) sequential treatment after tamoxifen (HR, 3.14; 95% CI, 1.44-6.88; P = .004) but was more pronounced with AI use as upfront monotherapy (HR, 5.53; 95% CI, 1.46-20.88; P = .012). This effect did not continue in the off-treatment follow-up. In subgroup analysis by menopausal status, tamoxifen did not seem to confer a protective effect on bone health in postmenopausal patients. Adherence to screening recommendations in AI-treated postmenopausal women was suboptimal, particularly at baseline and after 48 months of continuous AI use. CONCLUSIONS The natural, age-related reduction in bone density is exacerbated by breast cancer active AI treatment. Future research should focus on investigating screening adherence-related barriers/facilitators and effective strategies to bring practice in line with agreed standards.
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Affiliation(s)
- R Hamood
- School of Public Health, University of Haifa, Haifa, Israel
| | - H Hamood
- School of Public Health, University of Haifa, Haifa, Israel.
- Leumit Health Services, Haharoshet 13, Karmiel, Israel.
| | | | - L Keinan-Boker
- School of Public Health, University of Haifa, Haifa, Israel
- Ministry of Health, Israel Center for Disease Control, Ramat Gan, Israel
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Cervinka T, Giangregorio L, Sievanen H, Cheung AM, Craven BC. Peripheral Quantitative Computed Tomography: Review of Evidence and Recommendations for Image Acquisition, Analysis, and Reporting, Among Individuals With Neurological Impairment. J Clin Densitom 2018; 21:563-582. [PMID: 30196052 DOI: 10.1016/j.jocd.2018.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 05/07/2018] [Accepted: 10/07/2018] [Indexed: 02/06/2023]
Abstract
In 2015, the International Society for Clinical Densitometry (ISCD) position statement regarding peripheral quantitative computed tomography (pQCT) did not recommend routine use of pQCT, in clinical settings until consistency in image acquisition and analysis protocols are reached, normative studies conducted, and treatment thresholds identified. To date, the lack of consensus-derived recommendations regarding pQCT implementation remains a barrier to implementation of pQCT technology. Thus, based on description of available evidence and literature synthesis, this review recommends the most appropriate pQCT acquisition and analysis protocols for clinical care and research purposes, and recommends specific measures for diagnosis of osteoporosis, assigning fracture risk, and monitoring osteoporosis treatment effectiveness, among patients with neurological impairment. A systematic literature search of MEDLINE, EMBASE©, CINAHL, and PubMed for available pQCT studies assessing bone health was carried out from inception to August 8th, 2017. The search was limited to individuals with neurological impairment (spinal cord injury, stroke, and multiple sclerosis) as these groups have rapid and severe regional declines in bone mass. Of 923 references, we identified 69 that met review inclusion criteria. The majority of studies (n = 60) used the Stratec XCT 2000/3000 pQCT scanners as reflected in our evaluation of acquisition and analysis protocols. Overall congruence with the ISCD Official Positions was poor. Only 11% (n = 6) studies met quality reporting criteria for image acquisition and 32% (n = 19) reported their data analysis in a format suitable for reproduction. Therefore, based on current literature synthesis, ISCD position statement standards and the authors' expertise, we propose acquisition and analysis protocols at the radius, tibia, and femur sites using Stratec XCT 2000/3000 pQCT scanners among patients with neurological impairment for clinical and research purposes in order to drive practice change, develop normative datasets and complete future meta-analysis to inform fracture risk and treatment efficacy evaluation.
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Affiliation(s)
- T Cervinka
- Neural Engineering and Therapeutics Team, Toronto Rehabilitation Research Institute-University Health Network, Toronto, Ontario, Canada.
| | - L Giangregorio
- Neural Engineering and Therapeutics Team, Toronto Rehabilitation Research Institute-University Health Network, Toronto, Ontario, Canada; Department of Kinesiology, University of Waterloo, Waterloo, Ontario, Canada
| | - H Sievanen
- Bone Research Group, UKK Institute, Tampere, Finland
| | - A M Cheung
- Centre of Excellence in Skeletal Health Assessment, University Health Network, Toronto, Ontario, Canada; Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - B C Craven
- Neural Engineering and Therapeutics Team, Toronto Rehabilitation Research Institute-University Health Network, Toronto, Ontario, Canada; Department of Kinesiology, University of Waterloo, Waterloo, Ontario, Canada; Centre of Excellence in Skeletal Health Assessment, University Health Network, Toronto, Ontario, Canada; Brain and Spinal Cord Rehabilitation Program, Toronto Rehabilitation Institute-University Health Network, Toronto, Canada; Department of Medicine, University of Toronto, Toronto, Ontario, Canada
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Orduna G, Humbert L, Fonolla R, Romera J, Cos ML, Rial A, Nogués X, Diez-Perez A, Mellibovsky L. Cortical and Trabecular Bone Analysis of Patients With High Bone Mass From the Barcelona Osteoporosis Cohort Using 3-Dimensional Dual-Energy X-ray Absorptiometry: A Case-Control Study. J Clin Densitom 2018. [PMID: 28648836 DOI: 10.1016/j.jocd.2017.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
High bone mass (HBM), a rare phenotype, can be detected by dual-energy X-ray absorptiometry (DXA) scanning. Measurements with peripheral quantitative computed tomography at the tibia have found increased trabecular bone mineral density and changes in cortical bone density and structure, all of which lead to increased bone strength. However, no studies on cortical and trabecular bone have been performed at the femur. The recently developed 3-dimensional (3D)-DXA software algorithm quantifies the trabecular and cortical volumetric bone mineral density (vBMD) and the anatomical distribution of cortical thickness using routine hip DXA scans. We analyzed the femurs of 15 women with HBM and 15 controls from the Barcelona Osteoporosis (BARCOS) cohort using the 3D-DXA technique. The mean vBMD of proximal femur was 29.7% higher in HBM cases than in controls for the integral bone, 41.3% higher for the trabecular bone, and 7.3% higher for the cortical bone (p < 0.001). No differences in bone size were detected between cases and controls. Patients with HBM had a thicker cortex and higher trabecular and cortical vBMDs, as measured by 3D-DXA at the femur and compared to controls; bone size was similar in both groups. To the best of our knowledge, this is the first description of trabecular and cortical characteristics of the hip in patients with HBM.
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Affiliation(s)
- Guillermina Orduna
- Internal Medicine Department, Parc de Salut Mar, Universitat Autònoma de Barcelona, Barcelona, Spain; IMIM (Hospital del Mar Research Institute), CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III FEDER, Barcelona, Spain
| | | | | | | | - M Lourdes Cos
- Internal Medicine Department, Parc de Salut Mar, Universitat Autònoma de Barcelona, Barcelona, Spain; IMIM (Hospital del Mar Research Institute), CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III FEDER, Barcelona, Spain
| | - Aboro Rial
- Internal Medicine Department, Parc de Salut Mar, Universitat Autònoma de Barcelona, Barcelona, Spain; IMIM (Hospital del Mar Research Institute), CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III FEDER, Barcelona, Spain
| | - Xavier Nogués
- Internal Medicine Department, Parc de Salut Mar, Universitat Autònoma de Barcelona, Barcelona, Spain; IMIM (Hospital del Mar Research Institute), CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III FEDER, Barcelona, Spain
| | - Adolfo Diez-Perez
- Internal Medicine Department, Parc de Salut Mar, Universitat Autònoma de Barcelona, Barcelona, Spain; IMIM (Hospital del Mar Research Institute), CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III FEDER, Barcelona, Spain.
| | - Leonardo Mellibovsky
- Internal Medicine Department, Parc de Salut Mar, Universitat Autònoma de Barcelona, Barcelona, Spain; IMIM (Hospital del Mar Research Institute), CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III FEDER, Barcelona, Spain
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De Luna G, Ranque B, Courbebaisse M, Ribeil JA, Khimoud D, Dupeux S, Silvera J, Offredo L, Pouchot J, Arlet JB. High bone mineral density in sickle cell disease: Prevalence and characteristics. Bone 2018; 110:199-203. [PMID: 29428552 DOI: 10.1016/j.bone.2018.02.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 01/30/2018] [Accepted: 02/05/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND Osteosclerosis (OSC) is a rarely studied complication of sickle cell disease (SCD). The objective of our study was to determine the prevalence and characteristics of high bone mineral density (BMD) and its radiological features in adult SCD patients. METHODS This prospective observational study was conducted from May 2007 to May 2016 in consecutive patients with steady-state SCD at two university hospitals. The BMD of the lumbar spine (L1-L4) and right femoral neck was determined by dual energy X-ray absorptiometry. Clinical, laboratory and radiographic data were recorded. High BMD was defined as a BMD Z-score of at least +2.5 standard deviations at the lumbar spine or hip. The characteristics of the patients with high BMD were compared to those of individuals with low or middle BMD, using multivariate ordinal logistic regression. RESULTS 135 patients (86 women and 49 men) with a median age of 27 (IQR 23-33) years were included. High BMD was diagnosed in 20 (15%) patients with a median age of 33.5 (IQR 28-45) years. The SCD genotypes of these patients were SS in 11, SC in 5, S/beta+ in 3, and S/beta0 in 1. High BMD patients more frequently harbored the S/beta SCD genotype (21% vs 5% in non-high BMD patients; p=0.047) and were older (p=0.0007). Compared to patients with low or middle BMD, after adjustment for age and SCD genotype, high BMD patients had a higher prevalence of avascular necrosis history (p=0.009), higher BMI (p=0.007), and lower serum resorption marker CTX (p=0.04), bilirubin (p=0.02) and parathyroid hormone levels (p=0.02). There were no differences between groups regarding fracture history, H-shaped vertebrae or other biological variables. CONCLUSION High-BMD values is a common manifestation in SCD patients, especially in those with the S/beta-thalassemia genotypes. The prevalence of high-BMD in SCD is associated with older age, suggesting that it will be more common in the future because the life span of patients with SCD is increasing thanks to significant progress in SCD treatment.
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Affiliation(s)
- Gonzalo De Luna
- Internal Medicine Department, Sickle Cell Referral Center, Georges Pompidou European Hospital, AP-HP, Paris, France; Faculté de Médecine Paris Descartes, Sorbonne Paris-Cité, Paris, France.
| | - Brigitte Ranque
- Internal Medicine Department, Sickle Cell Referral Center, Georges Pompidou European Hospital, AP-HP, Paris, France; Faculté de Médecine Paris Descartes, Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence GR-Ex, Paris, France
| | - Marie Courbebaisse
- Faculté de Médecine Paris Descartes, Sorbonne Paris-Cité, Paris, France; Physiology Department, Georges Pompidou European Hospital, AP-HP, INSERM, Unit 1151, Paris, France
| | - Jean-Antoine Ribeil
- Faculté de Médecine Paris Descartes, Sorbonne Paris-Cité, Paris, France; Department of Biotherapy, Necker Hospital, AP-HP, Paris, France
| | - Djamal Khimoud
- Internal Medicine Department, Sickle Cell Referral Center, Georges Pompidou European Hospital, AP-HP, Paris, France
| | - Sidonie Dupeux
- Internal Medicine Department, Sickle Cell Referral Center, Georges Pompidou European Hospital, AP-HP, Paris, France
| | - Jonathan Silvera
- Radiology department, Georges Pompidou European Hospital, AP-, HP, Paris, France
| | - Lucile Offredo
- INSERM U970 PARCC Equipe 4 "Epidémiologie cardiovasculaire et mort subite", Paris, France
| | - Jacques Pouchot
- Internal Medicine Department, Sickle Cell Referral Center, Georges Pompidou European Hospital, AP-HP, Paris, France; Faculté de Médecine Paris Descartes, Sorbonne Paris-Cité, Paris, France
| | - Jean-Benoît Arlet
- Internal Medicine Department, Sickle Cell Referral Center, Georges Pompidou European Hospital, AP-HP, Paris, France; Faculté de Médecine Paris Descartes, Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence GR-Ex, Paris, France
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Paccou J, Michou L, Kolta S, Debiais F, Cortet B, Guggenbuhl P. High bone mass in adults. Joint Bone Spine 2018; 85:693-699. [PMID: 29407041 DOI: 10.1016/j.jbspin.2018.01.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2017] [Indexed: 02/07/2023]
Abstract
A finding of high bone mineral density (BMD) from routine dual-energy X-ray absorptiometry (DXA) screening is not uncommon. No consensus exists about the definition of high BMD, and T-score and/or Z-score cutoffs of ≥+2.5 or ≥+4 have been suggested. The many disorders that can result in high BMD are usually classified based on whether the BMD changes are focal vs. generalized or acquired vs. constitutional. In over half the cases, careful interpretation of the DXA report and images identifies the cause as an artefact (e.g., degenerative spinal disease, vascular calcifications, or syndesmophytes) or focal lesion (e.g., sclerotic bone metastasis or Paget's disease). Generalized acquired high BMD may be secondary to a diverse range of disorders such as fluorosis, diffuse bone sclerosis related to renal osteodystrophy, hematological diseases, and hepatitis C. Identification of the cause may require additional investigations such as imaging studies, serum tryptase assay, or serological tests for the hepatitis C virus. Finally, high BMD is a feature of many genetic diseases, most notably osteopetrosis and the disorders caused by mutations in the sclerostin gene SOST (sclerosing bone dysplasia and van Buchem disease) or in the LRP5 gene encoding the low-density lipoprotein receptor-related protein 5 (which is the Wnt co-receptor).
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Affiliation(s)
- Julien Paccou
- Département de rhumatologie, université de Lille, 59000 Lille, France; PMOI, EA 4490, 59000 Lille, France.
| | - Laetitia Michou
- Division de rhumatologie, département de médecine, CHU de Québec, université Laval, Québec, G1V4G2 QC, Canada
| | - Sami Kolta
- Inserm, U 1153, département de rhumatologie, hôpital Cochin, Université Paris Descartes, 75014 Paris, France
| | - Françoise Debiais
- Service de rhumatologie, CHU de Poitiers, 2, rue de La-Milétrie, BP 577, 86021 Poitiers cedex, France
| | - Bernard Cortet
- Département de rhumatologie, université de Lille, 59000 Lille, France; PMOI, EA 4490, 59000 Lille, France
| | - Pascal Guggenbuhl
- Service de rhumatologie, CHU de Rennes, hôpital Sud, 16, boulevard de Bulgarie, BP 90347, 35203 Rennes cedex 2, France; Inserm UMR 991, 35043 Rennes, France; Université Rennes 1, faculté de médecine, 35043 Rennes, France
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Wanderman N, Freedman B, Currier B, Huddleston P, Yaszemski M, Nassr A. Interpreting the DXA analysis: When should you hold off on spinal fusion? ACTA ACUST UNITED AC 2018. [DOI: 10.1053/j.semss.2017.09.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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McAndrew CM, Agarwalla A, Abraham AC, Feuchtbaum E, Ricci WM, Tang SY. Local bone quality measurements correlates with maximum screw torque at the femoral diaphysis. Clin Biomech (Bristol, Avon) 2018; 52:95-99. [PMID: 29407864 PMCID: PMC5835210 DOI: 10.1016/j.clinbiomech.2018.01.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 01/17/2018] [Accepted: 01/19/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Successful fracture fixation depends critically on the stability of the screw-bone interface. Maximum achievable screw torque reflects the competence of this interface, but it cannot be quantified prior to screw stripping. Typically, the surgeon relies on the patients' bone mineral density and radiographs, along with experience and tactile feedback to assess whether sufficient compression can be generated by the screw and bone. However, the local bone quality would also critically influence the strength of the bone-screw interface. We investigated whether Reference Point Indentation can provide quantitative local bone quality measures that can inform subsequent screw-bone competence. METHODS We examined the associations between the maximum screw torque that can be achieved using 3.5 mm, 4.5 mm, and 6.5 mm diameter stainless steel screws at the distal femoral metaphysis and mid-diaphysis from 20 cadavers, with the femoral neck bone mineral density and the local measures of bone quality using Reference Point Indentation. FINDINGS Indentation Distance Increase, a measure of bone's resistance to microfracture, correlated with the maximum screw stripping torque for the 3.5 mm (p < 0.01; R = 0.56) and 4.5 mm diameter stainless steel screws (p < 0.01; R = 0.57) at the femoral diaphysis. At the femoral metaphysis, femoral neck bone mineral density significantly correlated with the maximum screw stripping torque achieved by the 3.5 mm (p < 0.01; R = 0.61), 4.5 mm (p < 0.01; R = 0.51), and 6.5 mm diameter stainless steel screws (p < 0.01; R = 0.56). INTERPRETATION Reference Point Indentation can provide localized measurements of bone quality that may better inform surgeons of the competence of the bone-implant interface and improve effectiveness of fixation strategies particularly in patients with compromised bone quality.
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Affiliation(s)
| | - Avinesh Agarwalla
- Department of Biomedical Engineering, Washington University in St. Louis, MO, USA
| | - Adam C Abraham
- Department of Orthopaedic Surgery, Washington University in St. Louis, MO, USA
| | - Eric Feuchtbaum
- Department of Orthopaedic Surgery, Washington University in St. Louis, MO, USA
| | - William M Ricci
- Department of Orthopaedic Surgery, Washington University in St. Louis, MO, USA
| | - Simon Y Tang
- Department of Orthopaedic Surgery, Washington University in St. Louis, MO, USA; Department of Biomedical Engineering, Washington University in St. Louis, MO, USA; Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, MO, USA.
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Nogués X, Nolla JM, Casado E, Jódar E, Muñoz-Torres M, Quesada-Gómez JM, Canals L, Balcells M, Lizán L. Spanish consensus on treat to target for osteoporosis. Osteoporos Int 2018; 29:489-499. [PMID: 29177559 PMCID: PMC5818595 DOI: 10.1007/s00198-017-4310-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 11/08/2017] [Indexed: 01/08/2023]
Abstract
UNLABELLED To reach a Spanish expert consensus on a treat-to-target strategy in osteoporosis, a Delphi Consensus Study has been developed. Most of the experts (59.8%) were rheumatologist with a mean clinical experience of 21.3 years (SD 8.5). Consensus was achieved for 70% of the items. Therapeutic objectives, patient follow-up scheme, treatment failure criteria, and appropriate treatment choice for use in T2T strategy in Spain have been defined. INTRODUCTION The paper aims to achieve a Spanish expert consensus on a treat-to-target (T2T) strategy in osteoporosis. METHODS A scientific committee led the project and was involved in expert panel identification and Delphi questionnaire development. Two Delphi rounds were completed. The first-round questionnaire included 24 items and assessed, using a seven-point Likert scale, the experts' wish (W) and prognosis (P) in 5 years for each topic (applicability, therapeutic objectives, patient follow-up, and possible treatment to be prescribed). Items for which there was no consensus in the first round were included in the second round. Consensus was defined as ≥75% agreement (somewhat/mostly/entirely agree) or disagreement (somewhat/mostly/entirely disagree) responses. RESULTS Of the experts, 112 and 106 completed the first and second rounds, respectively. 59.8% were rheumatologists with a mean clinical experience of 21.3 years (SD 8.5). Consensus was achieved for 70% of the items, and was established regarding the utility of a T2T strategy to define therapeutic objectives, optimal follow-up, and therapeutic algorithm. Participants agreed on the utility of the bone mineral density (BMD) value (T-score >-2.5 SD for spine and >-2.5/-2.0 SD for femoral neck), lack of fractures, and fracture risk (FRAX) as therapeutic objectives. For measuring BMD changes, consensus was achieved on the suitability of hip and femoral neck locations. Experts agreed to consider treatment failure as when a significant BMD gain could not be achieved, or when a new fracture occurs within 2-3 years. There was consensus that all proposed therapies should achieve a therapeutic target through T2T strategy (treatments with the highest consensus scores were denosumab and teriparatide). CONCLUSION The therapeutic objectives, patient follow-up scheme, treatment failure criteria, and appropriate treatment choice for use in T2T strategy in Spain have been established by a panel of experts. Some aspects nevertheless still require further analysis.
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Affiliation(s)
- X Nogués
- Mar Institute of Medical Research (IMIM), Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Universitat Autonòma de Barcelona , Barcelona, Spain.
| | - J M Nolla
- IDIBELL-University Hospital Bellvitge, L'Hospitalet de Llobregat, Spain
| | - E Casado
- Parc Taulí Universtiy Hospital, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain
| | - E Jódar
- University Hospital Quirón Salud, Universidad Europea de Madrid, Madrid, Spain
| | - M Muñoz-Torres
- Bone Metabolic Unit, UGC Endocrinología y Nutrición, Hospital Universitario Campus de la Salud de Granada, Instituto de Investigación Biosanitaria ibs, Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Granada, Spain
| | - J M Quesada-Gómez
- UGC Endocrinología y Nutrición, Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), University Hospital Reina Sofía & IMIBIC, Córdoba, Spain
| | | | | | - L Lizán
- Outcomes'10, Department of Medicine, University Jaume I, Castelló de la Plana, Spain
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Lima JG, Nobrega LHC, Lima NN, Dos Santos MCF, Baracho MDFP, Bandeira F, Capistrano L, Freire Neto FP, Jeronimo SMB. Bone Density in Patients With Berardinelli-Seip Congenital Lipodystrophy Is Higher in Trabecular Sites and in Type 2 Patients. J Clin Densitom 2018; 21:61-67. [PMID: 27894728 DOI: 10.1016/j.jocd.2016.10.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 08/15/2016] [Accepted: 10/31/2016] [Indexed: 10/20/2022]
Abstract
Berardinelli-Seip congenital lipodystrophy (BSCL) is a rare autosomal recessive syndrome characterized by a difficulty storing lipid in adipocytes, low body fat, hypoleptinemia, and hyperinsulinemia. We report here laboratory, bone mineral density (BMD), and bone mineral content findings of 21 patients (24.1 ± 8.4 yr old, 14 females, 18 diabetics, 5.3% total body fat) with BSCL. The mean leptin was very low (0.91 ± 0.42 ng/mL), and the mean values of the Z-scores for all studied sites were positive, except for the 33% radius (Z-score -0.5 standard deviation [SD]). Twelve patients (57.1%) had a BMD Z-score higher than +2.5 SD in at least 1 site. There was no significant difference in the Z-scores between males and females. None of type 1 (AGPAT2) patients had Z-scores higher than +2.5 SD, and these patients had a smaller Z-score of BMD total body (0.26 SD vs 1.90 SD, p = 0.022) and of bone mineral content (1.59 SD vs 3.3 SD, p = 0.032) than type 2 (seipin) patients. Insulin, as well as HOMAIR (homeostasis model assessment), correlated positively with the BMD of all sites, except for the 33% radius. Z-Scores on this site (33% radius) were the smallest of all. More than half of our patients with BSCL have BMD Z-scores higher than +2.5 SD on at least 1 site, and this increase is more pronounced in the trabecular sites and in type 2 patients.
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Affiliation(s)
- Josivan G Lima
- Departamento de Medicina Clínica, Hospital Universitário Onofre Lopes (HUOL), Natal, RN, Brazil; Health Graduate Program, Centro de Ciencias da Saúde, UFRN, Natal, RN, Brazil.
| | - Lucia Helena C Nobrega
- Departamento de Medicina Clínica, Hospital Universitário Onofre Lopes (HUOL), Natal, RN, Brazil
| | - Natalia N Lima
- Departamento de Medicina Clínica, Hospital Universitário Onofre Lopes (HUOL), Natal, RN, Brazil
| | - Marcel C F Dos Santos
- Departamento de Medicina Clínica, Hospital Universitário Onofre Lopes (HUOL), Natal, RN, Brazil
| | | | - Francisco Bandeira
- Division of Endocrinology and Diabetes, University of Pernambuco Medical School, Recife, Brazil
| | | | | | - Selma Maria B Jeronimo
- Instituto de Medicina Tropical do Rio Grande do Norte, Natal, RN, Brazil; Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil; Institute of Science and Technology of Tropical Diseases (INCT-DT), Natal, RN, Brazil
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50
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Butscheidt S, Rolvien T, Kornak U, Schmidt FN, Schinke T, Amling M, Oheim R. Clinical Significance of DXA and HR-pQCT in Autosomal Dominant Osteopetrosis (ADO II). Calcif Tissue Int 2018; 102:41-52. [PMID: 29018903 DOI: 10.1007/s00223-017-0332-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 09/21/2017] [Indexed: 12/29/2022]
Abstract
The main hallmark of high bone mass (HBM) disorders is increased bone mineral density, potentially visible in conventional radiographs and quantifiable by other radiographic methods. While one of the most common forms of HBM is CLCN7-related autosomal dominant osteopetrosis type II (ADO II), there is no consensus on diagnostic thresholds. We therefore wanted to assess whether CLCN7-osteopetrosis patients differ from benign HBM cases in terms of (1) bone mineral density, (2) bone structure, and (3) microarchitectural abnormalities. 16 patients meeting the criteria of HBM (DXA T/Z-score ≥ 2.5 at all sites) were included in this retrospective study. Osteologic assessment using dual-energy X-ray absorptiometry (DXA), high-resolution peripheral quantitative computed tomography (HR-pQCT), and serum analyses was performed. The presence of CLCN7 and/or other HBM gene mutations affecting bone mass were tested using a custom designed bone panel. While a DXA threshold for ADO II could be implemented (DXA Z-score ≥ + 6.0), the differences in bone microarchitecture were of lesser extent compared to the benign HBM group. All adult patients with ADO II suffered from elevated fracture rates independent from Z-score. In HR-pQCT, structural alterations, such as bone islets were found only inconsistently. In cases of HBM, a DXA Z-score ≥ 6 may be indicative for an inheritable HBM disorder, such as ADO II. Microarchitectural bone alterations might represent local microfracture repair or accumulation of cartilage remnants due to impaired osteoclast function, but seem not to be correlated with fracture risk.
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Affiliation(s)
- Sebastian Butscheidt
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Lottestr. 59, 22529, Hamburg, Germany
| | - Tim Rolvien
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Lottestr. 59, 22529, Hamburg, Germany
| | - Uwe Kornak
- Institute of Medical Genetics and Human Genetics, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies, Charité Universitätsmedizin Berlin, Berlin, Germany
- Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Felix N Schmidt
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Lottestr. 59, 22529, Hamburg, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Lottestr. 59, 22529, Hamburg, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Lottestr. 59, 22529, Hamburg, Germany.
| | - Ralf Oheim
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Lottestr. 59, 22529, Hamburg, Germany
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