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Bonaccorsi G, Sciavicco G, Rinaudo L, Brigato A, Fiorella G, Carnevale A, Ulivieri FM, Messina C. Usefulness of DXA-based bone strain index in postmenopausal women with type 2 diabetes mellitus. Arch Osteoporos 2024; 19:54. [PMID: 38926167 PMCID: PMC11208269 DOI: 10.1007/s11657-024-01411-5] [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: 09/29/2023] [Accepted: 06/11/2024] [Indexed: 06/28/2024]
Abstract
Bone Strain Index (BSI) is a new dual-energy x-ray absorptiometry (DXA)-based index. We retrospectively evaluated data from 153 postmenopausal women with a history of type 2 diabetes mellitus (T2DM). Lumbar spine and femoral Bone Strain Index (BSI) were sensitive to skeletal impairment in postmenopausal women suffering from T2DM. PURPOSE Bone Strain Index (BSI) is a new dual-energy X-ray absorptiometry (DXA)-based measurement. We evaluated the performance of BSI in predicting the presence of fragility fractures in type 2 diabetes mellitus (T2DM) postmenopausal women. METHODS We retrospectively evaluated data from a case-control study of 153 postmenopausal women with a history of at least 5 years of T2DM (age from 40 to 90 years). For each subject, we assessed the personal or familiar history of previous fragility fractures and menopause age, and we collected data about bone mineral density (BMD), BSI, and Trabecular Bone Score (TBS) measurements. Statistical analysis was performed having as outcome the history of fragility fractures. RESULTS Out of a total of 153 subjects, n = 22 (14.4%) presented at least one major fragility fracture. A negative correlation was found between lumbar BSI and lumbar BMD (r = - 0.49, p < 0.001) and between total femur BSI and total femur BMD (r = - 0.49, p < 0.001). A negative correlation was found between femoral neck BSI and femoral neck BMD (r = - 0.22, p < 0.001). Most DXA-based variables were individually able to discriminate between fractured and non-fractured subjects (p < 0.05), and lumbar BSI was the index with the most relative difference between the two populations, followed by femoral BSI. CONCLUSION Lumbar spine and femoral BSI are sensitive to skeletal impairment in postmenopausal women suffering from T2DM. The use of BSI in conjunction with BMD and TBS can improve fracture risk assessment.
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Affiliation(s)
- Gloria Bonaccorsi
- Department of Translational Medicine, Menopause and Osteoporosis Center, University of Ferrara, Ferrara, Italy
| | - Guido Sciavicco
- Department of Mathematics and Computer Science, University of Ferrara, Ferrara, Italy
| | - Luca Rinaudo
- Tecnologie Avanzate T.A. S.R.L, Lungo Dora Voghera 36/A, Turin, Italy
| | - Andrea Brigato
- Department of Mathematics and Computer Science, University of Ferrara, Ferrara, Italy
| | - Giuliana Fiorella
- Tecnologie Avanzate T.A. S.R.L, Lungo Dora Voghera 36/A, Turin, Italy
| | - Aldo Carnevale
- Department of Translational Medicine - Section of Radiology, University of Ferrara, Ferrara, Italy
| | | | - Carmelo Messina
- U.O.C. Radiodiagnostica, ASST Centro Specialistico Ortopedico Traumatologico Gaetano Pini-CTO, 20122, Milan, Italy.
- Dipartimento Di Scienze Biomediche Per La Salute, Università Degli Studi Di Milano, Via Pascal, 36, Milan, Italy.
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Roux JP, Duboeuf F, Sornay-Rendu E, Rinaudo L, Ulivieri FM, Wegrzyn J, Chapurlat R. The relationship between bone strain index, bone mass, microarchitecture and mechanical behavior in human vertebrae: an ex vivo study. Osteoporos Int 2024; 35:1069-1075. [PMID: 38520505 DOI: 10.1007/s00198-024-07066-9] [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: 10/24/2023] [Accepted: 02/22/2024] [Indexed: 03/25/2024]
Abstract
The aim of this study was to determine whether the Bone Strain Index (BSI), a recent DXA-based bone index, is related to bone mechanical behavior, microarchitecture and finally, to determine whether BSI improves the prediction of bone strength and the predictive role of BMD in clinical practice. PURPOSE Bone Strain Index (BSI) is a new DXA-based bone index that represents the finite element analysis of the bone deformation under load. The current study aimed to assess whether the BSI is associated with 3D microarchitecture and the mechanical behavior of human lumbar vertebrae. METHODS Lumbar vertebrae (L3) were harvested fresh from 31 human donors. The anteroposterior BMC (g) and aBMD (g/cm2) of the vertebral body were measured using DXA, and then the BSI was automatically derived. The trabecular bone volume (Tb.BV/TV), trabecular thickness (Tb.Th), degree of anisotropy (DA), and structure model index (SMI) were measured using µCT with a 35-µm isotropic voxel size. Quasi-static uniaxial compressive testing was performed on L3 vertebral bodies under displacement control to assess failure load and stiffness. RESULTS The BSI was significantly correlated with failure load and stiffness (r = -0.60 and -0.59; p < 0.0001), aBMD and BMC (r = -0.93 and -0.86; p < 0.0001); Tb.BV/TV and SMI (r = -0.58 and 0.51; p = 0.001 and 0.004 respectively). After adjustment for aBMD, the association between BSI and stiffness, BSI and SMI remained significant (r = -0.51; p = 0.004 and r = -0.39; p = 0.03 respectively, partial correlations) and the relation between BSI and failure load was close to significance (r = -0.35; p = 0.06). CONCLUSION The BSI was significantly correlated with the microarchitecture and mechanical behavior of L3 vertebrae, and these associations remained statistically significant regardless of aBMD.
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Affiliation(s)
| | | | | | | | | | - Julien Wegrzyn
- Univ Lyon, INSERM, UMR 1033, 69008, Lyon, France
- Department of Orthopedic Surgery, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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3
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Rinaudo L, Cuttone S, Messina C, Magni V, Capra D, Sconfienza LM, Sardanelli F, Ulivieri FM. Generation and Validation of Normative, Age-Specific Reference Curves for Bone Strain Index in Women. Diagnostics (Basel) 2024; 14:1046. [PMID: 38786344 PMCID: PMC11120451 DOI: 10.3390/diagnostics14101046] [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: 04/01/2024] [Revised: 05/07/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024] Open
Abstract
Bone Strain Index (BSI), based on dual-energy X-ray absorptiometry (DXA), is a densitometric index of bone strength of the femur and lumbar spine. Higher BSI values indicate a higher strain applied to bone, predisposing to higher fracture risk. This retrospective, multicentric study on Italian women reports the BSI normative age-specific reference curves. A cohort of Caucasian Italian women aged 20 to 90 years was selected from three different clinical centres. Bone mineral density (BMD) and BSI measurements were obtained for the lumbar spine vertebrae (L1-L4) and for the femur (neck, trochanter and intertrochanter) using Hologic densitometers scans. The data were compared with BMD normative values provided by the densitometer manufacturer. Then, the age-specific BSI curve for the femur and lumbar spine was generated. No significant difference was found between the BMD of the subjects in this study and BMD reference data provided by Hologic (p = 0.68 for femur and p = 0.90 for lumbar spine). Spine BSI values (L1-L4) increase by 84% between 20 and 90 years of age. The mean BSI of the total femur increases about 38% in the same age range. The BSI age-specific reference curve could help clinicians improve osteoporosis patient management, allowing an appropriate patient classification according to the bone resistance to the applied loads and fragility fracture risk assessment.
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Affiliation(s)
- Luca Rinaudo
- Tecnologie Avanzate T.A. srl, Lungo Dora Voghera 36/A, 10153 Torino, Italy
| | - Sofia Cuttone
- Tecnologie Avanzate T.A. srl, Lungo Dora Voghera 36/A, 10153 Torino, Italy
| | - Carmelo Messina
- IRCCS Istituto Ortopedico Galeazzi, 20157 Milano, Italy
- Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, 20122 Milano, Italy
| | - Veronica Magni
- Postgraduate School in Radiodiagnostics, Università degli Studi di Milano, 20122 Milano, Italy
| | - Davide Capra
- Postgraduate School in Radiodiagnostics, Università degli Studi di Milano, 20122 Milano, Italy
| | - Luca Maria Sconfienza
- IRCCS Istituto Ortopedico Galeazzi, 20157 Milano, Italy
- Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, 20122 Milano, Italy
| | - Francesco Sardanelli
- Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, 20122 Milano, Italy
- IRCCS Policlinico San Donato, Via Morandi 30, 20097 San Donato Milanese, Italy
| | - Fabio Massimo Ulivieri
- Fondazione IRCCS Ca’Granda Ospedale Maggiore Policlinico, Via F. Sforza 35, 20122 Milano, Italy
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Franco AS, Murai IH, Takayama L, Caparbo VF, Marchi LL, Velloso EDRP, Pereira RMR. Assessment of Bone Microarchitecture in Patients with Systemic Mastocytosis and its Association with Clinical and Biochemical Parameters of the Disease. Calcif Tissue Int 2023; 113:276-285. [PMID: 37294314 DOI: 10.1007/s00223-023-01107-x] [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: 03/14/2023] [Accepted: 05/30/2023] [Indexed: 06/10/2023]
Abstract
Patients with systemic mastocytosis (SM) are at high risk of bone deterioration. However, the evaluation of bone microarchitecture in this disease remains unclear. We aimed to assess bone microarchitecture in patients with SM. This was a cross-sectional study of 21 adult patients with SM conducted in a quaternary referral hospital in Sao Paulo, Brazil. A healthy, age-, weight-, and sex-matched cohort of 63 participants was used to provide reference values for bone microarchitecture, assessed by high resolution peripheral quantitative computed tomography (HR-pQCT). Total volumetric bone mineral density (vBMD), cortical vBMD, and cortical thickness at the radius were significantly lower in the control group compared with the SM group (all P < 0.001). Patients with aggressive SM had significantly lower trabecular number (Tb.N) (P = 0.035) and estimated failure load (F.load) (P = 0.032) at the tibia compared with those with indolent SM. Handgrip strength was significantly higher in patients who had more Tb.N at the radius (ρ, 0.46; P = 0.036) and tibia (ρ, 0.49; P = 0.002), and lower who had more trabecular separation at the radius (ρ, -0.46; P = 0.035) and tibia (ρ, -0.52; P = 0.016). Strong and positive associations between F.load (ρ, 0.75; P < 0.001) and stiffness (ρ, 0.70; P < 0.001) at the radius, and between F.load at the tibia (ρ, 0.45; P = 0.038) were observed with handgrip strength. In this cross-sectional study, aggressive SM was more susceptible to bone deterioration compared with indolent SM. In addition, the findings demonstrated that handgrip strength was associated with bone microarchitecture and bone strength.
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Affiliation(s)
- Andre S Franco
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil.
- Faculdade de Medicina, FMUSP da Universidade de São Paulo, Av Dr Arnaldo, 455 - Reumatologia, 3º Andar, Sala 3193, Cerqueira César, Sao Paulo, 01246-903, Brazil.
| | - Igor H Murai
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Liliam Takayama
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Valeria F Caparbo
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Luan L Marchi
- Service of Hematology, Transfusion and Cell Therapy and Laboratory of Medical Investigation in Pathogenesis and Directed Therapy in Onco-Immuno-Hematology (LIM-31) HCFMUSP, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Elvira D R P Velloso
- Service of Hematology, Transfusion and Cell Therapy and Laboratory of Medical Investigation in Pathogenesis and Directed Therapy in Onco-Immuno-Hematology (LIM-31) HCFMUSP, University of Sao Paulo Medical School, Sao Paulo, Brazil
- Hospital Israelita Albert Einstein, Sao Paulo, Brazil
| | - Rosa M R Pereira
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
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Pedersini R, Cosentini D, Rinaudo L, Zamparini M, Ulivieri FM, di Mauro P, Maffezzoni F, Monteverdi S, Vena W, Laini L, Amoroso V, Simoncini EL, Farina D, Mazziotti G, Berruti A. Assessment of DXA derived bone quality indexes and bone geometry parameters in early breast cancer patients: A single center cross-sectional study. Bone Rep 2023; 18:101654. [PMID: 36700242 PMCID: PMC9868326 DOI: 10.1016/j.bonr.2023.101654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 01/12/2023] Open
Abstract
Background Bone mineral density (BMD) lacks sensitivity in individual fracture risk assessment in early breast cancer (EBC) patients treated with aromatase inhibitors (AIs). New dual-energy X-ray absorptiometry (DXA) based risk factors are needed. Methods Trabecular bone score (TBS), bone strain index (BSI) and DXA parameters of bone geometry were evaluated in postmenopausal women diagnosed with EBC. The aim was to explore their association with morphometric vertebral fractures (VFs). Subjects were categorized in 3 groups in order to evaluate the impact of AIs and denosumab on bone geometry: AI-naive, AI-treated minus (AIDen-) or plus (AIDen+) denosumab. Results A total of 610 EBC patients entered the study: 305 were AI-naive, 187 AIDen-, and 118 AIDen+. In the AI-naive group, the presence of VFs was associated with lower total hip BMD and T-score and higher femoral BSI. As regards as bone geometry parameters, AI-naive fractured patients reported a significant increase in femoral narrow neck (NN) endocortical width, femoral NN subperiosteal width, intertrochanteric buckling ratio (BR), intertrochanteric endocortical width, femoral shaft (FS) BR and endocortical width, as compared to non-fractured patients. Intertrochanteric BR and intertrochanteric cortical thickness significantly increased in the presence of VFs in AIDen- patients, not in AIDen+ ones. An increase in cross-sectional area and cross-sectional moment of inertia, both intertrochanteric and at FS, significantly correlated with VFs only in AIDen+. No association with VFs was found for either lumbar BSI or TBS in all groups. Conclusions Bone geometry parameters are variably associated with VFs in EBC patients, either AI-naive or AI treated in combination with denosumab. These data suggest a tailored choice of fracture risk parameters in the 3 subgroups of EBC patients.
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Key Words
- AI, aromatase inhibitor
- AIDen+, aromatase inhibitor with denosumab
- AIDen-, aromatase inhibitor without denosumab
- Aromatase inhibitors
- BMD, bone mineral density
- BMI, body-mass index
- BR, buckling ratio
- BSI, bone strain index
- Bone strain index
- CSA, cross-sectional area
- CSMI, cross-sectional moment of inertia
- DXA, dual-energy X-ray absorptiometry
- Dual-energy X-ray absorptiometry
- EBC, early breast cancer
- FS, femoral shaft
- HAL, hip axis length
- HR, hormone receptor
- HSA, Hip Structure Analysis
- IT, intertrochanteric
- NN, narrow neck
- NSA, neck shaft angle
- PS, propensity score
- ROC, receiver operator characteristic
- TBS, trabecular bone score
- VF, vertebral fracture
- Vertebral fractures
- Z, modulus
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Affiliation(s)
- Rebecca Pedersini
- Medical Oncology, ASST Spedali Civili, Brescia, Italy
- Breast Unit, ASST Spedali Civili, Brescia, Italy
- Corresponding author at: Oncologia Medica, ASST Spedali Civili di Brescia, Piazzale Spedali Civili 1, 20123, Brescia, Italy.
| | - Deborah Cosentini
- Medical Oncology, ASST Spedali Civili, Brescia, Italy
- Breast Unit, ASST Spedali Civili, Brescia, Italy
| | | | | | | | | | | | | | - Walter Vena
- Endocrinology, Diabetology and Medical Andrology Unit, Metabolic Bone Diseases and Osteoporosis Section, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
| | - Lara Laini
- Medical Oncology, ASST Spedali Civili, Brescia, Italy
| | - Vito Amoroso
- Medical Oncology, ASST Spedali Civili, Brescia, Italy
| | | | - Davide Farina
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Medical Oncology, University of Brescia, ASST Spedali Civili, Brescia, Italy
| | - Gherardo Mazziotti
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, MI, Italy
- Endocrinology, Diabetology and Medical Andrology Unit, Metabolic Bone Diseases and Osteoporosis Section, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
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Ulivieri FM, Rinaudo L, Messina C, Aliprandi A, Sconfienza LM, Sardanelli F, Cesana BM. Bone Strain Index: preliminary distributional characteristics in a population of women with normal bone mass, osteopenia and osteoporosis. Radiol Med 2022; 127:1151-1158. [DOI: 10.1007/s11547-022-01543-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 08/17/2022] [Indexed: 11/24/2022]
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Lind T, Melo FR, Gustafson AM, Sundqvist A, Zhao XO, Moustakas A, Melhus H, Pejler G. Mast Cell Chymase Has a Negative Impact on Human Osteoblasts. Matrix Biol 2022; 112:1-19. [PMID: 35908613 DOI: 10.1016/j.matbio.2022.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 07/07/2022] [Accepted: 07/26/2022] [Indexed: 10/16/2022]
Abstract
Mast cells have been linked to osteoporosis and bone fractures, and in a previous study we found that mice lacking a major mast cell protease, chymase, develop increased diaphyseal bone mass. These findings introduce the possibility that mast cell chymase can regulate bone formation, but the underlying mechanism(s) has not previously been investigated. Here we hypothesized that chymase might exert such effects through a direct negative impact on osteoblasts, i.e., the main bone-building cells. Indeed, we show that chymase has a distinct impact on human primary osteoblasts. Firstly, chymase was shown to have pronounced effects on the morphological features of osteoblasts, including extensive cell contraction and actin reorganization. Chymase also caused a profound reduction in the output of collagen from the osteoblasts, and was shown to degrade osteoblast-secreted fibronectin and to activate pro-matrix metallopeptidase-2 released by the osteoblasts. Further, chymase was shown to have a preferential impact on the gene expression, protein output and phosphorylation status of TGFβ-associated signaling molecules. A transcriptomic analysis was conducted and revealed a significant effect of chymase on several genes of importance for bone metabolism, including a reduction in the expression of osteoprotegerin, which was confirmed at the protein level. Finally, we show that chymase interacts with human osteoblasts and is taken up by the cells. Altogether, the present findings provide a functional link between mast cell chymase and osteoblast function, and can form the basis for a further evaluation of chymase as a potential target for intervention in metabolic bone diseases.
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Affiliation(s)
- Thomas Lind
- Uppsala University Hospital, Department of Medical Sciences, Section of Clinical Pharmacology, Uppsala, Sweden.
| | - Fabio Rabelo Melo
- Uppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden
| | - Ann-Marie Gustafson
- Uppsala University Hospital, Department of Medical Sciences, Section of Clinical Pharmacology, Uppsala, Sweden; Uppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden
| | - Anders Sundqvist
- Uppsala University, Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala, Sweden
| | - Xinran O Zhao
- Uppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden
| | - Aristidis Moustakas
- Uppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden
| | - Håkan Melhus
- Uppsala University Hospital, Department of Medical Sciences, Section of Clinical Pharmacology, Uppsala, Sweden
| | - Gunnar Pejler
- Uppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden
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Ulivieri FM, Rinaudo L. The Bone Strain Index: An Innovative Dual X-ray Absorptiometry Bone Strength Index and Its Helpfulness in Clinical Medicine. J Clin Med 2022; 11:jcm11092284. [PMID: 35566410 PMCID: PMC9102586 DOI: 10.3390/jcm11092284] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/06/2022] [Accepted: 04/14/2022] [Indexed: 12/27/2022] Open
Abstract
Bone strain Index (BSI) is an innovative index of bone strength that provides information about skeletal resistance to loads not considered by existing indexes (Bone Mineral Density, BMD. Trabecular Bone Score, TBS. Hip Structural Analysis, HSA. Hip Axis Length, HAL), and, thus, improves the predictability of fragility fractures in osteoporotic patients. This improved predictability of fracture facilitates the possibility of timely intervention with appropriate therapies to reduce the risk of fracture. The development of the index was the result of combining clinical, radiographical and construction-engineering skills. In fact, from a physical point of view, primary and secondary osteoporosis, leading to bone fracture, are determined by an impairment of the physical properties of bone strength: density, internal structure, deformation and fatigue. Dual X-ray absorptiometry (DXA) is the gold standard for assessing bone properties, and it allows measurement of the BMD, which is reduced mainly in primary osteoporosis, the structural texture TBS, which can be particularly degraded in secondary osteoporosis, and the bone geometry (HSA, HAL). The authors recently conceived and developed a new bone deformation index named Bone Strain Index (BSI) that assesses the resistance of bone to loads. If the skeletal structure is equated to engineering construction, these three indexes are all considered to determine the load resistance of the construct. In particular, BSI allows clinicians to detect critical information that BMD and TBS cannot explain, and this information is essential for an accurate definition of a patient’s fracture risk. The literature demonstrates that both lumbar and femoral BSI discriminate fractured osteoporotic people, that they predict the first fragility fracture, and further fragility fractures, monitor anabolic treatment efficacy and detect patients affected by secondary osteoporosis. BSI is a new diagnostic tool that offers a unique perspective to clinical medicine to identify patients affected by primary and, specially, secondary osteoporosis. This literature review illustrates BSI’s state of the art and its ratio in clinical medicine.
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Affiliation(s)
- Fabio Massimo Ulivieri
- Centro per la Diagnosi e la Terapia dell’Osteoporosi, Casa di Cura La Madonnina, Via Quadronno 29, 20122 Milan, Italy
- Correspondence:
| | - Luca Rinaudo
- Tecnologie Avanzate T.A. Srl, Lungo Dora Voghera 36, 10153 Torino, Italy;
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Sornay-Rendu E, Duboeuf F, Ulivieri FM, Rinaudo L, Chapurlat R. The bone strain index predicts fragility fractures. The OFELY study. Bone 2022; 157:116348. [PMID: 35121211 DOI: 10.1016/j.bone.2022.116348] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/25/2022] [Accepted: 01/28/2022] [Indexed: 02/07/2023]
Abstract
Recently, the bone strain index (BSI), a new index of bone strength based on a finite element model (FEA) from dual X-ray absorptiometry (DXA), has been developed. BSI represents the average equivalent strain inside the bone, assuming that a higher strain level (high BSI) indicates a condition of higher risk. Our study aimed to analyze the relationship between BSI and age, BMI and areal BMD in pre- and postmenopausal women and to prospectively investigate fracture prediction (Fx) by BSI in postmenopausal women. Methods. At the 14th annual follow-up of the OFELY study, BSI was measured at spine (Spine BSI) and femoral scans (Neck and Total Hip BSI), in addition to areal BMD with DXA (Hologic QDR 4500) in 846 women, mean (SD) age 60 yr (15). The FRAX® (fracture risk assessment tool) for major osteoporotic fractures (MOF) was calculated with FN areal BMD (aBMD) at baseline; incident fragility fractures were annually registered until January 2016. Results. In premenopausal women (n = 261), Neck and Total Hip BSI were slightly negatively correlated with age (Spearman r = -0.13 and -0.15 respectively, p = 0.03), whereas all BSIs were positively correlated with BMI (r = +0.20 to 0.37, p < 0.01) and negatively with BMD (r = -0.69 to -0.37, p < 0.0001). In postmenopausal women (n = 585), Neck and Total Hip BSI were positively correlated with age (Spearman r = +0.26 and +0.31 respectively, p < 0.0001), whereas Spine BSI was positively correlated with BMI (r = +0.22, p < 0.0001) and all BSIs were negatively correlated with BMD (r = -0.81 to -0.60, p < 0.0001). During a median [IQ] 9.3 [1.0] years of follow-up, 133 postmenopausal women reported an incident fragility Fx, including 80 women with a major osteoporotic Fx (MOF) and 26 women with clinical vertebral Fx (VFx). Each SD increase of BSI value was associated with a significant increase of the risk of all fragility Fx with an age-adjusted HR of 1.23 for Neck BSI (p = 0.02); 1.27 for Total Hip BSI (p = 0.004) and 1.35 for Spine BSI (p < 0.0001). After adjustment for FRAX®, the association remained statistically significant for Total Hip BSI (HR 1.24, p = 0.02 for all fragility Fx; 1.31, p = 0.01 for MOF) and Spine BSI (HR 1.33, p < 0.0001 for all fragility Fx; 1.33, p = 0.005 for MOF; 1.67, p = 0.002 for clinical VFx). In conclusion, spine and femur BSI, an FEA DXA derived index, predict incident fragility fracture in postmenopausal women, regardless of FRAX®.
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Affiliation(s)
| | - François Duboeuf
- INSERM UMR 1033 and Université Claude Bernard-Lyon 1, Hôpital E Herriot, Lyon, France.
| | | | - Luca Rinaudo
- Technologic Srl, Lungo Dora Voghera 34/36A, 10153 Torino, Italy.
| | - Roland Chapurlat
- INSERM UMR 1033 and Université Claude Bernard-Lyon 1, Hôpital E Herriot, Lyon, France.
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10
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Systemic Mastocytosis: Radiological Point of View. Mediterr J Hematol Infect Dis 2021; 13:e2021056. [PMID: 34527208 PMCID: PMC8425380 DOI: 10.4084/mjhid.2021.056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 08/10/2021] [Indexed: 12/27/2022] Open
Abstract
Radiological diagnosis of systemic mastocytosis (SM) can be hard to establish. This difficulty is mainly due to the variable radiological features involving many organ systems (e.g., respiratory, cardiovascular, lympho-reticular, digestive systems, and most commonly skin), and above all, to the broad spectrum of skeletal findings. Skeletal involvement is the most common and prominent imaging feature in patients with SM and represents a prognostic factor as it may entail an aggressive course of the disease. Diagnosis, largely established by histological evaluation of a bone marrow trephine biopsy, supplemented by imaging modalities such as radiography, CT, and magnetic resonance imaging, requires a team approach between the hematologist, radiologist, and pathologist. The general radiologist needs to be familiar with the imaging findings because they may be the first to suggest the correct diagnosis. The primary purpose of this review article was to equip clinicians with pertinent radiological semiotics by presenting relevant radiological features that assist early diagnosis and selection of an effective treatment.
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Buccino F, Colombo C, Duarte DHL, Rinaudo L, Ulivieri FM, Vergani LM. 2D and 3D numerical models to evaluate trabecular bone damage. Med Biol Eng Comput 2021; 59:2139-2152. [PMID: 34471983 PMCID: PMC8440311 DOI: 10.1007/s11517-021-02422-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 08/05/2021] [Indexed: 12/25/2022]
Abstract
The comprehension of trabecular bone damage processes could be a crucial hint for understanding how bone damage starts and propagates. Currently, different approaches to bone damage identification could be followed. Clinical approaches start from dual X-ray absorptiometry (DXA) technique that can evaluate bone mineral density (BMD), an indirect indicator of fracture risk. DXA is, in fact, a two-dimensional technology, and BMD alone is not able to predict the effective risk of fractures. First attempts in overcoming this issue have been performed with finite element (FE) methods, combined with the use of three-dimensional high-resolution micro-computed tomographic images. The purpose of this work is to evaluate damage initiation and propagation in trabecular vertebral porcine samples using 2D linear-elastic FE models from DXA images and 3D linear FE models from micro-CT images. Results show that computed values of strains with 2D and 3D approaches (e.g., the minimum principal strain) are of the same order of magnitude. 2D DXA-based models still remain a powerful tool for a preliminary screening of trabecular regions that are prone to fracture, while from 3D micro-CT-based models, it is possible to reach details that permit the localization of the most strained trabecula.
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Affiliation(s)
- Federica Buccino
- Department of Mechanical Engineering, Politecnico Di Milano, Via La Masa 1, 20156, Milan, Italy
| | - Chiara Colombo
- Department of Mechanical Engineering, Politecnico Di Milano, Via La Masa 1, 20156, Milan, Italy
| | | | - Luca Rinaudo
- TECHNOLOGIC S.R.L. Hologic Italia, Lungo Dora Voghera, 34/36A, 10153, Turin, Italy
| | - Fabio Massimo Ulivieri
- Nuclear Medicine-Bone Metabolic Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, via Francesco Sforza 75, 20122, Milan, Italy
| | - Laura Maria Vergani
- Department of Mechanical Engineering, Politecnico Di Milano, Via La Masa 1, 20156, Milan, Italy.
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Tabacco G, Naciu AM, Messina C, Sanson G, Rinaudo L, Cesareo R, Falcone S, Manfrini S, Napoli N, Bilezikian JP, Ulivieri FM, Palermo A. DXA-Based Bone Strain Index: A New Tool to Evaluate Bone Quality in Primary Hyperparathyroidism. J Clin Endocrinol Metab 2021; 106:2304-2312. [PMID: 33963754 PMCID: PMC8599893 DOI: 10.1210/clinem/dgab317] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Indexed: 11/19/2022]
Abstract
CONTEXT Primary hyperparathyroidism (PHPT) is associated with impaired bone quality and increased fracture risk. Reliable tools for the evaluation of bone quality parameters are not yet clinically available. Bone Strain Index (BSI) is a new metric for bone strength based on Finite Element Analysis from lumbar spine and femoral neck dual-energy x-ray absorptiometry (DXA) images. OBJECTIVE To assess the lumbar spine (LS), femoral neck (FN), and total hip (TH) BSI in PHPT patients compared with controls and to investigate the association of BSI with vertebral fractures (VFs) in PHPT. METHODS This case-control study enrolled 50 PHPT patients and 100 age- and sex-matched control subjects from an outpatient clinic. The main outcome measures were LS-BSI, FN-BSI, and TH-BSI. RESULTS FN bone mineral density (BMD) and one-third distal radius BMD were lower in the PHPT group than in controls (FN 0.633 ± 0.112 vs 0.666 ± 0.081, P = 0.042; radius 0.566 ± 0.07 vs 0.625 ± 0.06, P < 0.001). PHPT group has significant lower TBS score compared with controls (1.24 ± 0.09 vs 1.30 ± 0.10, P < 0.001). BSI was significantly higher at LS (2.28 ± 0.59 vs 2.02 ± 0.43, P = 0.009), FN (1.72 ± 0.41 vs 1.49 ± 0.35, P = 0.001), and TH (1.51 ± 0.33 vs 1.36 ± 0.25, P = 0.002) in PHPT. LS-BSI showed moderate accuracy for discriminating VFs (AUC 0.667; 95% CI, 0.513-0.820). LS-BSI ≥ 2.2 and was a statistically significant independent predictor of VFs, with an adjusted odds ratio ranging from 5.7 to 15.1. CONCLUSION BSI, a DXA-derived bone quality index, is impaired in PHPT and may help to identify PHPT subjects at high risk of fractures.
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Affiliation(s)
- Gaia Tabacco
- Unit of Endocrinology and Diabetes, Campus Bio-Medico University of Rome, Rome, Italy
| | - Anda M Naciu
- Unit of Endocrinology and Diabetes, Campus Bio-Medico University of Rome, Rome, Italy
| | - Carmelo Messina
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy
| | - Gianfranco Sanson
- School of Nursing, Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | | | - Roberto Cesareo
- UOS Malattie Metaboliche, Santa Maria Goretti Hospital, Latina, Italy
| | - Stefania Falcone
- Unit of Endocrinology and Metabolic Diseases, CTO A. Alesini Hospital, University Tor Vergata, Rome, Italy
| | - Silvia Manfrini
- Unit of Endocrinology and Diabetes, Campus Bio-Medico University of Rome, Rome, Italy
| | - Nicola Napoli
- Unit of Endocrinology and Diabetes, Campus Bio-Medico University of Rome, Rome, Italy
| | - John P Bilezikian
- Department of Medicine, Division of Endocrinology, Vagelos College of Physicians & Surgeons, Columbia University, New York, New York 10032, USA
| | - Fabio M Ulivieri
- U.O. Medicina Nucleare, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Andrea Palermo
- Unit of Endocrinology and Diabetes, Campus Bio-Medico University of Rome, Rome, Italy
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Ulivieri FM, Rinaudo L. Beyond Bone Mineral Density: A New Dual X-Ray Absorptiometry Index of Bone Strength to Predict Fragility Fractures, the Bone Strain Index. Front Med (Lausanne) 2021; 7:590139. [PMID: 33521014 PMCID: PMC7843921 DOI: 10.3389/fmed.2020.590139] [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: 07/31/2020] [Accepted: 12/17/2020] [Indexed: 12/12/2022] Open
Abstract
For a proper assessment of osteoporotic fragility fracture prediction, all aspects regarding bone mineral density, bone texture, geometry and information about strength are necessary, particularly in endocrinological and rheumatological diseases, where bone quality impairment is relevant. Data regarding bone quantity (density) and, partially, bone quality (structure and geometry) are obtained by the gold standard method of dual X-ray absorptiometry (DXA). Data about bone strength are not yet readily available. To evaluate bone resistance to strain, a new DXA-derived index based on the Finite Element Analysis (FEA) of a greyscale of density distribution measured on spine and femoral scan, namely Bone Strain Index (BSI), has recently been developed. Bone Strain Index includes local information on density distribution, bone geometry and loadings and it differs from bone mineral density (BMD) and other variables of bone quality like trabecular bone score (TBS), which are all based on the quantification of bone mass and distribution averaged over the scanned region. This state of the art review illustrates the methodology of BSI calculation, the findings of its in reproducibility and the preliminary data about its capability to predict fragility fracture and to monitor the follow up of the pharmacological treatment for osteoporosis.
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Affiliation(s)
- Fabio Massimo Ulivieri
- Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Ca' Granda Ospedale Maggiore Policlinico, Unità Operativa (UO) Medicina Nucleare, Milan, Italy
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