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Buehring B, Hansen KE, Lewis BL, Cummings SR, Lane NE, Binkley N, Ensrud KE, Cawthon PM. Dysmobility Syndrome Independently Increases Fracture Risk in the Osteoporotic Fractures in Men (MrOS) Prospective Cohort Study. J Bone Miner Res 2018; 33:1622-1629. [PMID: 29701911 PMCID: PMC6469960 DOI: 10.1002/jbmr.3455] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 04/07/2018] [Accepted: 04/13/2018] [Indexed: 12/30/2022]
Abstract
We proposed the term "dysmobility syndrome" (DS) to identify individuals with impaired musculoskeletal health, a risk factor for falls and fractures. Whether DS is associated with increased risk of incident fracture is unknown. The Osteoporotic Fractures in Men (MrOS) study enrolled 5994 men ages ≥65 years, between March 2000 and April 2002. We used baseline data to determine whether DS increased fracture risk, independent of the Fracture Risk Assessment Tool (FRAX). Men met DS criteria at baseline if they had three or more of the following: appendicular lean mass/height2 <7.26 kg/m2 , total body fat >30%, spine or hip T-score ≤ -2.5, grip strength <30 kg, gait speed <1.0 m/s, and one or more fall within 12 months. We examined whether baseline DS increased the risk of hip and major osteoporotic fractures (MOFs) over a median of 14 years (IQR, 9 to 15 years). Among 5834 men mean age 74 ± 6 years, 471 (8%) had DS and 635 (11%) experienced an MOF, including 274 (5%) hip fractures. Age (per SD increase) conferred an HR of 1.72 (95% CI, 1.59 to 1.86), DS conferred an HR of 3.45 (95% CI, 2.78 to 4.29) and FRAX calculated with BMD (per %) conferred an HR of 1.10 (95% CI, 1.08 to 1.11) for MOF. Prediction of MOF using the FRAX score provided a concordance value of 0.67 ± 0.012 (concordance values are mean ± SE). Concordance increased to 0.69 ± 0.012 by adding DS and to 0.70 ± 0.012 by adding DS and age to the multivariate model. Kaplan-Meier curves indicated that men with both DS and a FRAX risk above the National Osteoporosis Foundation (NOF) treatment thresholds had higher MOF (HR 6.23; 95% CI, 3.10 to 12.54) and hip (HR 7.73; 95% CI, 5.95 to 10.04) fracture risk than men with neither condition. We suggest further studies to determine the optimal criteria for DS, and to test DS as a predictor of falls and fractures, especially in women. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Bjoern Buehring
- Osteoporosis Clinical Research Program, Department of Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Karen E Hansen
- Osteoporosis Clinical Research Program, Department of Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Brian L Lewis
- Osteoporosis Clinical Research Program, Department of Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Steven R Cummings
- San Francisco Coordinating Center, California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - Nancy E Lane
- Center for Musculoskeletal Health, University of California-Davis School of Medicine, Davis, CA, USA
| | - Neil Binkley
- Osteoporosis Clinical Research Program, Department of Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Kristine E Ensrud
- Division of Epidemiology & Community Health, University of Minnesota, Minneapolis, MN, USA
| | - Peggy M Cawthon
- San Francisco Coordinating Center, California Pacific Medical Center Research Institute, San Francisco, CA, USA
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Hong N, Kim CO, Youm Y, Choi JY, Kim HC, Rhee Y. Dysmobility syndrome is associated with prevalent morphometric vertebral fracture in older adults: the Korean Urban-Rural Elderly (KURE) study. Arch Osteoporos 2018; 13:86. [PMID: 30109432 DOI: 10.1007/s11657-018-0500-2] [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: 03/27/2018] [Accepted: 08/03/2018] [Indexed: 02/03/2023]
Abstract
UNLABELLED In a community-dwelling elderly cohort, dysmobility syndrome was associated with elevated odds of morphometric vertebral fracture or any prevalent fracture, independent of age and covariates. Dysmobility syndrome improved discrimination for fracture when added to the FRAX score. INTRODUCTION Dysmobility syndrome was coined to indicate patients with impaired musculoskeletal health. Data on the association of dysmobility syndrome with prevalent morphometric vertebral fracture (VF) in elderly persons are limited. METHODS A total of 1369 community-dwelling elderly subjects (mean age 71.6 years; women 66%) were analyzed. Dysmobility syndrome was defined as ≥ 3 components among falls, low lean mass, high fat mass, osteoporosis, low grip strength, and low timed get-up-and-go performance. VF was defined as a ≥ 25% reduction in the height of vertebral bodies in plain radiographs. Modified cutpoints of each component at which elevate the odds of fracture were investigated using receiver-operating characteristics analysis. Net reclassification improvement (NRI) and integrated discrimination index (IDI) were calculated to assess additive discriminatory value of dysmobility syndrome over FRAX. RESULTS The prevalence of VF and any fracture composite of VF and non-VF was 16% and 25%, respectively, increasing according to number of dysmobility components (from 0 to 5; VF 10-35%; any fracture 16-45%). Dysmobility syndrome was associated with elevated odds of VF (adjusted OR [aOR] 1.52, 95% CI 1.08-2.15) or any fracture (aOR 1.46, 95% CI 1.07-1.98) but no longer with non-VF (aOR 1.31, 95% CI 0.86-1.98) in multivariate model, whereas modified definition showed robust association with non-VF (aOR 1.79, 95% CI 1.23-2.60). Dysmobility syndrome improved discrimination for prevalent fracture when added to FRAX (NRI 0.25, 95% CI 0.13-0.37; IDI 0.020, 95% CI 0.014-0.026). CONCLUSIONS Dysmobility syndrome was associated with elevated odds of morphometric VF in community-dwelling older adults, independent of age and covariates.
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Affiliation(s)
- Namki Hong
- Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
- Graduate School, Yonsei University College of Medicine, Seoul, South Korea
| | - Chang Oh Kim
- Division of Geriatrics, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Yoosik Youm
- Department of Sociology, Yonsei University College of Social Sciences, Seoul, South Korea
| | - Jin-Young Choi
- Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyeon Chang Kim
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Yumie Rhee
- Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
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Johannesdottir F, Allaire B, Bouxsein ML. Fracture Prediction by Computed Tomography and Finite Element Analysis: Current and Future Perspectives. Curr Osteoporos Rep 2018; 16:411-422. [PMID: 29846870 DOI: 10.1007/s11914-018-0450-z] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW This review critiques the ability of CT-based methods to predict incident hip and vertebral fractures. RECENT FINDINGS CT-based techniques with concurrent calibration all show strong associations with incident hip and vertebral fracture, predicting hip and vertebral fractures as well as, and sometimes better than, dual-energy X-ray absorptiometry areal biomass density (DXA aBMD). There is growing evidence for use of routine CT scans for bone health assessment. CT-based techniques provide a robust approach for osteoporosis diagnosis and fracture prediction. It remains to be seen if further technical advances will improve fracture prediction compared to DXA aBMD. Future work should include more standardization in CT analyses, establishment of treatment intervention thresholds, and more studies to determine whether routine CT scans can be efficiently used to expand the number of individuals who undergo evaluation for fracture risk.
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Affiliation(s)
- Fjola Johannesdottir
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, RN 120, Boston, MA, 02215, USA.
- Department of Orthopedic Surgery, Harvard Medical School, Boston, MA, USA.
| | - Brett Allaire
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, RN 120, Boston, MA, 02215, USA
| | - Mary L Bouxsein
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, RN 120, Boston, MA, 02215, USA
- Department of Orthopedic Surgery, Harvard Medical School, Boston, MA, USA
- Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA
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Siglinsky E, Buehring B, Krueger D, Binkley N, Yamada Y. Could bioelectric impedance spectroscopy (BIS) measured appendicular intracellular water serve as a lean mass measurement in sarcopenia definitions? A pilot study. Osteoporos Int 2018; 29:1653-1657. [PMID: 29574521 DOI: 10.1007/s00198-018-4475-z] [Citation(s) in RCA: 2] [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: 08/09/2017] [Accepted: 03/06/2018] [Indexed: 01/25/2023]
Abstract
UNLABELLED DXA lean mass measurement for sarcopenia diagnosis is not always possible. Bioelectric impedance spectroscopy (BIS), a portable technology, is a potential alternative to DXA-measured lean mass. This pilot study explores the possibility and proposes an arbitrarily chosen potential cut-point for appendicular intracellular water corrected by height (aICW/ht2). INTRODUCTION Sarcopenia definitions often include DXA lean mass measurement. However, DXA is not always available. We explored the potential of a less-expensive mobile method, bioelectric impedance spectroscopy (BIS), to assess lean mass for sarcopenia determination. We hypothesized that BIS-measured appendicular intracellular water (aICW/ht2) would correlate with DXA-measured appendicular lean mass (ALM)/ht2 and with functional parameters. If so, establishing an aICW/ht2 cut-point in sarcopenia definitions may be feasible. METHODS Sixty-one community-dwelling women, mean age 79.9, had BIS and DXA lean mass, grip strength, gait speed, and jumping mechanography assessments. BIS aICW was calculated using limb length and intracellular water resistance. aICW/ht2 was compared to DXA-measured ALM/ht2 by linear regression. The European Working Group ALM/ht2 and an exploratory aICW/ht2 cut-point were utilized. RESULTS In this cohort, ALM/ht2 and aICW/ht2 were moderately correlated, R2 = 0.55, p < 0.0001. Lean mass was low in 7 and normal in 44 by BIS and DXA. Those with low aICW/ht2 had lower grip strength (p = 0.04) and jump power (p = 0.0002) than those with normal aICW/ht2 and ALM/ht2. Subjects with low ALM/ht2 had lower jump power (p = 0.0006) but were not different in gait speed or grip strength. CONCLUSIONS BIS aICW is correlated with DXA-measured ALM directly, and when height adjusted. An aICW/ht2 cut-point of 6.5 L/m2 identified 70% of women with low ALM/ht2. Women with low lean mass by DXA and BIS had poorer function measured by jump power. These pilot data support further evaluation of BIS measurement inclusion into sarcopenia definitions.
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Affiliation(s)
- E Siglinsky
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - B Buehring
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - D Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - N Binkley
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA.
| | - Y Yamada
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
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Hong N, Kim CO, Youm Y, Kim HC, Rhee Y. Low peak jump power is associated with elevated odds of dysmobility syndrome in community-dwelling elderly individuals: the Korean Urban Rural Elderly (KURE) study. Osteoporos Int 2018. [PMID: 29520606 DOI: 10.1007/s00198-018-4466-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
UNLABELLED In a community-dwelling elderly cohort (Korean Urban Rural Elderly), low peak jump power was associated with elevated odds of dysmobility syndrome and its components, independent of age and comorbidities. Jump power measurement improved discrimination of individuals with dysmobility syndrome when added to conventional risk factors. INTRODUCTION Dysmobility syndrome was proposed to encompass the risks affecting musculoskeletal outcomes. Jump power measurement is a safe, reproducible high-intensity test for physical function in elderly. However, the relationship between jump power and dysmobility syndrome remains unknown. METHODS A total of 1369 subjects (mean 71.6 years; women, 66%) were analyzed from a community-based cohort. Dysmobility syndrome was defined as the presence of ≥ 3 factors among falls in the preceding year, low lean mass, high fat mass, osteoporosis, low grip strength, and low timed get-up-and-go (TUG) performance. Subjects were grouped into tertiles of jump power relative to weight based on sex-stratified cutoffs (32.4 and 27.6 W/kg in men; 23.9 and 19.9 W/kg in women) or into the failed-to-jump group. RESULTS The prevalence of dysmobility syndrome was 20% overall, increasing from the highest (T1) to lowest (T3) jump power tertile (1, 11, 15% in men; 11, 16, 39% in women) and the failed-to-jump group (39% in men; 48% in women). Low jump power or failed-to-jump was associated with elevated odds of dysmobility syndrome (T3 vs. T1, adjusted odds ratio [aOR] 4.35, p < 0.001; failed-to-jump vs. T1, aOR 7.60, p < 0.001) and its components including falls, low lean mass, high fat mass, and poor TUG performance but not osteoporosis after adjustment for covariates. Jump power modestly discriminated dysmobility syndrome (area under the curve [AUC], 0.71, p < 0.001), which improved discriminatory performance when added to conventional risk factors (AUC, from 0.75 to 0.79, p < 0.001). CONCLUSIONS Low peak jump power was associated with elevated odds of dysmobility syndrome and its components, independent of age and comorbidities.
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Affiliation(s)
- Namki Hong
- Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, 120-752, Korea
- Graduate School, Yonsei University College of Medicine, Seoul, Korea
| | - Chang Oh Kim
- Division of Geriatrics, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yoosik Youm
- Department of Sociology, Yonsei University College of Social Sciences, Seoul, Korea
| | - Hyeon Chang Kim
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Yumie Rhee
- Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, 120-752, Korea.
- Department of Internal Medicine, Endocrine Research Institute, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.
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Lagari V, Gavcovich T, Levis S. The Good and the Bad About the 2017 American College of Physicians Osteoporosis Guidelines. Clin Ther 2018; 40:168-176. [DOI: 10.1016/j.clinthera.2017.11.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 11/14/2017] [Accepted: 11/14/2017] [Indexed: 01/06/2023]
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Lee JK, Yoon BH, Jung K, Kim G, Han SH. Comparison of Bone Mineral Density and Appendicular Lean Body Mass between Osteoporotic Distal Radius Fracture and Degenerative Rotator Cuff Tear in Women Patients. J Bone Metab 2017; 24:235-240. [PMID: 29259963 PMCID: PMC5734949 DOI: 10.11005/jbm.2017.24.4.235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 11/23/2017] [Accepted: 11/24/2017] [Indexed: 02/07/2023] Open
Abstract
Background Authors assessed lean body mass (fat free tissue), upper and lower, and bone mineral density (BMD) in patients of osteoporotic bone distal radius fracture (DRF) and degenerative rotator cuff tear (RCT) patients of shoulder. We predict inferior muscle mass and osteoporosis are more frequent in DRF group than RCT group. Methods Between January 2016 and June 2017, overall 38 of DRF and 30 of RCT were eligible for this retrospective comparison study after excluding of patients with compounding factors. BMD and other body composition, fat and lean body mass, were assessed with a single dual energy X-ray absorptiometry in one hospital. Results T-score of spine were −2.2 and −1.6 in DRF and RCT patients with significant difference (P=0.040). Final BMD score, lower score of patient between spine and femoral score, of both group also presented difference with significance, −2.4 of DRF and −1.9 of RCT patients (P=0.047). Diagnosis of osteoporosis was confirmed in 19 patients (50%) from DRF compared with 9 patients (30%) from RCT. The mean lean soft tissue mass of the arm was 3.7 kg and 3.8 kg in the DRF and RCT, respectively, without significant difference (P=0.882). The mean lean body mass of the leg was 11.0 kg and 10.5 kg in the DRF and RCT, respectively, without significant difference (P=0.189). The relative overall appendicular lean mass was not significantly different between groups. Conclusions Even though BMD difference, we did not find muscle mass difference between DRF and RCT patients.
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Affiliation(s)
- Jun-Ku Lee
- Department of Orthopaedic Surgery, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Byung-Ho Yoon
- Department of Orthopaedic Surgery, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Kyunghun Jung
- Department of Orthopaedic Surgery, Bundang CHA Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Gotak Kim
- Department of Orthopaedic Surgery, Bundang CHA Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Soo-Hong Han
- Department of Orthopaedic Surgery, Bundang CHA Medical Center, CHA University School of Medicine, Seongnam, Korea
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