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On the Failure Initiation in the Proximal Human Femur Under Simulated Sideways Fall
- Source :
- Annals of Biomedical Engineering. 46:270-283
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- The limitations of areal bone mineral density measurements for identifying at-risk individuals have led to the development of alternative screening methods for hip fracture risk including the use of geometrical measurements from the proximal femur and subject specific finite element analysis (FEA) for predicting femoral strength, based on quantitative CT data (qCT). However, these methods need more development to gain widespread clinical applications. This study had three aims: To investigate whether proximal femur geometrical parameters correlate with obtained femur peak force during the impact testing; to examine whether or not failure of the proximal femur initiates in the cancellous (trabecular) bone; and finally, to examine whether or not surface fracture initiates in the places where holes perforate the cortex of the proximal femur. We found that cortical thickness around the trochanteric-fossa is significantly correlated to the peak force obtained from simulated sideways falling (R 2 = 0.69) more so than femoral neck cortical thickness (R 2 = 0.15). Dynamic macro level FE simulations predicted that fracture generally initiates in the cancellous bone compartments. Moreover, our micro level FEA results indicated that surface holes may be involved in primary failure events.
- Subjects :
- Male
musculoskeletal diseases
0301 basic medicine
Finite Element Analysis
Biomedical Engineering
030209 endocrinology & metabolism
Models, Biological
03 medical and health sciences
0302 clinical medicine
medicine
Humans
Femur
Femoral neck
Bone mineral
Orthodontics
Hip fracture
Proximal femur
Hip Fractures
Femur Head
Human femur
medicine.disease
030104 developmental biology
medicine.anatomical_structure
Cancellous Bone
Fracture (geology)
Female
Cancellous bone
Geology
Subjects
Details
- ISSN :
- 15739686 and 00906964
- Volume :
- 46
- Database :
- OpenAIRE
- Journal :
- Annals of Biomedical Engineering
- Accession number :
- edsair.doi.dedup.....58c70f7780cb82531490ceb32f4da502