Abstract
Summary
Hip fracture risk assessment is an important but challenging task. Quantitative CT-based patient-specific finite element (FE) analysis (FEA) incorporates bone geometry and bone density in the proximal femur. We developed a global FEA-computed fracture risk index to increase the prediction accuracy of hip fracture incidence.
Purpose
Quantitative CT-based patient-specific finite element (FE) analysis (FEA) incorporates bone geometry and bone density in the proximal femur to compute the force (fracture load) and energy necessary to break the proximal femur in a particular loading condition. The fracture loads and energies-to-failure are individually associated with incident hip fracture, and provide different structural information about the proximal femur.
Methods
We used principal component analysis (PCA) to develop a global FEA-computed fracture risk index that incorporates the FEA-computed yield and ultimate failure loads and energies-to-failure in four loading conditions of 110 hip fracture subjects and 235 age- and sex-matched control subjects from the AGES-Reykjavik study. Using a logistic regression model, we compared the prediction performance for hip fracture based on the stratified resampling.
Results
We referred the first principal component (PC1) of the FE parameters as the global FEA-computed fracture risk index, which was the significant predictor of hip fracture (p-value < 0.001). The area under the receiver operating characteristic curve (AUC) using PC1 (0.776) was higher than that using all FE parameters combined (0.737) in the males (p-value < 0.001).
Conclusions
The global FEA-computed fracture risk index increased hip fracture risk prediction accuracy in males.
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Data Availability
The datasets analyzed during the current study are not publicly available. Requests for access to these datasets should be directed to the corresponding authors.
References
Richards JB, Zheng H-F, Spector TD (2012) Genetics of osteoporosis from genome-wide association studies: advances and challenges. Nat Rev Genet 13:576–588
Recker R, Kimmel D (1991) Changes in trabecular microstructure in osteoporosis occur with normal bone remodeling dynamics. J Bone Miner Res 6:S225
Yang T-L, Chen X-D, Guo Y, Lei S-F, Wang J-T, Zhou Q, Pan F, Chen Y, Zhang Z-X, Dong S-S (2008) Genome-wide copy-number-variation study identified a susceptibility gene, UGT2B17, for osteoporosis. The American Journal of Human Genetics 83:663–674
Genant H, Engelke K, Prevrhal S (2008) Advanced CT bone imaging in osteoporosis. Rheumatology 47:iv9–iv16
Chang G, Honig S, Brown R, Deniz CM, Egol KA, Babb JS, Regatte RR, Rajapakse CS (2014) Finite element analysis applied to 3-T MR imaging of proximal femur microarchitecture: lower bone strength in patients with fragility fractures compared with control subjects. Radiology 272:464
Carballido-Gamio J, Bonaretti S, Saeed I, Harnish R, Recker R, Burghardt AJ, Keyak JH, Harris T, Khosla S, Lang TF (2015) Automatic multi-parametric quantification of the proximal femur with quantitative computed tomography. Quant Imaging Med Surg 5:552
Keyak J, Koyama A, LeBlanc A, Lu Y, Lang T (2009) Reduction in proximal femoral strength due to long-duration spaceflight. Bone 44:449–453
Sibonga J, Spector E, Keyak J, Zwart S, Smith S, Lang T (2020) Use of quantitative computed tomography to assess for clinically-relevant skeletal effects of prolonged spaceflight on astronaut hips. J Clin Densitom 23(2):155–164
Keyak J, Sigurdsson S, Karlsdottir G, Oskarsdottir D, Sigmarsdottir A, Zhao S, Kornak J, Harris T, Sigurdsson G, Jonsson B (2011) Male–female differences in the association between incident hip fracture and proximal femoral strength: a finite element analysis study. Bone 48:1239–1245
Orwoll ES, Marshall LM, Nielson CM, Cummings SR, Lapidus J, Cauley JA, Ensrud K, Lane N, Hoffmann PR, Kopperdahl DL (2009) Finite element analysis of the proximal femur and hip fracture risk in older men. J Bone Miner Res 24:475–483
Keyak J, Sigurdsson S, Karlsdottir G, Oskarsdottir D, Sigmarsdottir A, Kornak J, Harris T, Sigurdsson G, Jonsson B, Siggeirsdottir K (2013) Effect of finite element model loading condition on fracture risk assessment in men and women: the AGES-Reykjavik study. Bone 57:18–29
Jolliffe IT, Cadima J (2016) Principal component analysis: a review and recent developments. Phil Trans R Soc A 374:20150202
Sarker IH (2021) Machine learning: algorithms, real-world applications and research directions. SN Computer Science 2:1–21
Harris TB, Launer LJ, Eiriksdottir G, Kjartansson O, Jonsson PV, Sigurdsson G, Thorgeirsson G, Aspelund T, Garcia ME, Cotch MF (2007) Age, gene/environment susceptibility–Reykjavik study: multidisciplinary applied phenomics. Am J Epidemiol 165:1076–1087
Keyak J, Kaneko T, Khosla S, Amin S, Atkinson E, Lang T, Sibonga J (2020) Hip load capacity and yield load in men and women of all ages. Bone 137:115321
Keyak JH, Kaneko TS, Tehranzadeh J, Skinner HB (2005) Predicting proximal femoral strength using structural engineering models. Clin Orthop Relat Res 1976–2007(437):219–228
Kaneko T, Bell J, Pejcic M, Tehranzadeh J, Keyak J (2004) Mechanical properties, density and quantitative CT scan data of trabecular bone with and without metastases. J Biomech 37(4):523–530
Kaneko T, Pejcic M, Tehranzadeh J, Keyak J (2003) Relationships between material properties and CT scan data of cortical bone with and without metastatic lesions. Med Eng Phys 25(6):445–454
Keyak JH, Rossi SA, Jones KA, Skinner HB (1997) Prediction of femoral fracture load using automated finite element modeling. J Biomech 31:125–133
Keyak JH (2001) Improved prediction of proximal femoral fracture load using nonlinear finite element models. Med Eng Phys 23:165–173
Kuhn M, Johnson K (2013) Applied predictive modeling. Springer
Marshall D, Johnell O, Wedel H (1996) Meta-analysis of how well measures of bone mineral density predict occurrence of osteoporotic fractures. BMJ 312:1254–1259
LaCroix A, Beck T, Cauley J, Lewis C, Bassford T, Jackson R, Wu G, Chen Z (2010) Hip structural geometry and incidence of hip fracture in postmenopausal women: what does it add to conventional bone mineral density? Osteoporos Int 21:919–929
Leslie W, Luo Y, Yang S, Goertzen A, Ahmed S, Delubac I, Lix L (2019) Fracture risk indices from DXA-based finite element analysis predict incident fractures independently from FRAX: the Manitoba BMD Registry. J Clin Densitom 22(3):338–345
Leslie W, Lix LM, Morin S, Johansson H, Odén A, McCloskey E, Kanis J (2015) Hip axis length is a FRAX- and bone density-independent risk factor for hip fracture in women. J Clin Endocrinol Metab 100(5):2063–2070
Cody DD, Gross GJ, Hou FJ, Spencer HJ, Goldstein SA, Fyhrie DP (1999) Femoral strength is better predicted by finite element models than QCT and DXA. J Biomech 32:1013–1020
Acknowledgements
The study was approved by the Icelandic National Bioethics Committee (VSN: 00-063) and the Data Protection Authority. The researchers are indebted to the participants for their willingness to participate in the study.
Funding
This study was supported by NIH/NIA R01AG028832 and NIH/NIAMS R01AR46197. The Age, Gene/Environment Susceptibility Reykjavik Study is funded by NIH contract N01-AG-12100, the NIA Intramural Research Program, Hjartavernd (the Icelandic Heart Association), and the Althingi (the Icelandic Parliament). H-WD was partially supported by U19 AG055373 and R01 AR069055. XC was funded by the Michigan Technological University Health Research Institute Fellowship program and the Portage Health Foundation Graduate Assistantship.
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Cao, X., Keyak, J.H., Sigurdsson, S. et al. A new hip fracture risk index derived from FEA-computed proximal femur fracture loads and energies-to-failure. Osteoporos Int 35, 785–794 (2024). https://doi.org/10.1007/s00198-024-07015-6
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DOI: https://doi.org/10.1007/s00198-024-07015-6