Low-trauma hip fracture, usually caused by fall from standing height, has become a main source of morbidity and mortality among the elderly. However, the hip fracture risk is subject-dependent as it is related to the subject’s anthropometric parameters, the kinematic/kinetic variables in fall, and the hip anatomy. A compound fracture risk indicator is proposed in this study to define the correlation between the hip fracture risk and subject’s parameters such as anthropometric parameters, bone mineral density (BMD), height of body mass center (HMC), and hip soft tissue thickness (STT). In this study, a two-level, subject-specific biomechanical model composed of a whole-body dynamics model and a proximal femur finite element model was used to predict the hip fracture risk for 80 subjects. The required information was obtained from the subject’s whole body and hip DXA (dual energy X-ray absorptiometry) images. Then, multivariate nonlinear least-square fits of power functions were used to investigate the effect of parameters on hip fracture risk. Results indicated that although BMD is the dominant parameter affecting the hip fracture risk, other parameters such as hip soft tissue thickness and anthropometric parameters also have considerable effects. This finding suggests that the hip fracture risk cannot be accurately predicted by the currently available single factor predictors as they do not consider all multifactorial parameters. However, the proposed function can properly predict the risk of hip fracture in the absence of any computational simulation and biomechanical model. It also quantifies the effect of musculoskeletal-, and organ-level parameters on hip fracture risk and demonstrates which individual is more likely to experience hip fracture.
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ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 2–5, 2015
Boston, Massachusetts, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5710-6
PROCEEDINGS PAPER
A Compound Risk Indicator for Subject-Specific Prediction of Hip Fracture in Sideways Falls
Masoud Nasiri Sarvi,
Masoud Nasiri Sarvi
University of Manitoba, Winnipeg, MB, Canada
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Yunhua Luo
Yunhua Luo
University of Manitoba, Winnipeg, MB, Canada
Search for other works by this author on:
Masoud Nasiri Sarvi
University of Manitoba, Winnipeg, MB, Canada
Yunhua Luo
University of Manitoba, Winnipeg, MB, Canada
Paper No:
DETC2015-48052, V003T14A005; 5 pages
Published Online:
January 19, 2016
Citation
Nasiri Sarvi, M, & Luo, Y. "A Compound Risk Indicator for Subject-Specific Prediction of Hip Fracture in Sideways Falls." Proceedings of the ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 3: 17th International Conference on Advanced Vehicle Technologies; 12th International Conference on Design Education; 8th Frontiers in Biomedical Devices. Boston, Massachusetts, USA. August 2–5, 2015. V003T14A005. ASME. https://doi.org/10.1115/DETC2015-48052
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