Study of hip fracture risk by DXA-based patient-specific finite element model

2015 ◽  
Vol 25 (2) ◽  
pp. 213-220 ◽  
Author(s):  
Zannatul Ferdous ◽  
Yunhua Luo
Keyword(s):  
Finite Element ◽  
Hip Fracture ◽  
Finite Element Model ◽  
Fracture Risk ◽  
Element Model ◽  
Patient Specific ◽  
Hip Fracture Risk

A preliminary dual-energy X-ray absorptiometry-based finite element model for assessing osteoporotic hip fracture risk

2011 ◽  
Vol 225 (12) ◽  
pp. 1188-1195 ◽  
Author(s):  
Y Luo ◽  
Z Ferdous ◽  
W D Leslie
Keyword(s):  
Finite Element ◽  
Hip Fracture ◽  
Finite Element Model ◽  
Fracture Risk ◽  
Element Model ◽  
Dual Energy ◽  
X Ray ◽  
Hip Fracture Risk ◽  
Osteoporotic Hip Fracture ◽  
Risk Indices

To more accurately assess osteoporotic hip fracture risk in a specific patient, a dual-energy X-ray absorptiometry (DXA)-based finite element model was constructed from the patient’s femur DXA image. The outermost contour of the femur bone segmented from the DXA image was used to generate a finite element mesh. Bone mechanical properties, such as Young’s modulus, are correlated with areal bone mineral density (BMD) captured in the DXA image. A quasi-static loading condition representing a sideway fall was applied to the finite element model. Three fracture risk indices were introduced and expressed as ratios of internal forces caused by impact forces occurring in sideway fall to bone ultimate cross-section strength at the three critical locations, i.e. the femoral neck, the intertrochanteric region, and the subtrochanteric region. The proposed finite element modelling procedure was validated against six representative clinical cases extracted from the Manitoba BMD database, where initial and follow-up DXA images have been taken to monitor longitudinal variation of areal BMD in individual patients. It was found from the clinical validation that variations in the proposed fracture risk indices have the same trends as those indicated by the conventional areal BMD and T-score. In addition, by the three proposed fracture risk indices it is possible to further identify the specific fracture location. It was also found that for the same subject, the variations in the three fracture risk indices have quite different magnitudes, with intertrochanteric region the largest and subtrochanteric region the smallest, which is probably owing to the different content of trabecular and cortical bones in the three regions. With further development, it is promising that the proposed DXA-based finite element model will be a useful tool for accurate assessment of osteoporosis development and for treatment monitoring.

scholarly journals Effect of finite element model loading condition on fracture risk assessment in men and women: The AGES-Reykjavik study

Bone ◽  
2013 ◽  
Vol 57 (1) ◽  
pp. 18-29 ◽  
Author(s):  
J.H. Keyak ◽  
S. Sigurdsson ◽  
G.S. Karlsdottir ◽  
D. Oskarsdottir ◽  
A. Sigmarsdottir ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Finite Element ◽  
Finite Element Model ◽  
Fracture Risk ◽  
Loading Condition ◽  
Element Model ◽  
Fracture Risk Assessment ◽  
Men And Women

A parameterized finite element model for hip fracture prediction

2006 ◽  
Vol 39 ◽  
pp. S44-S45
Author(s):  
L. Duchemin ◽  
D. Mitton ◽  
J.D. Laredo ◽  
W. Skalli
Keyword(s):  
Finite Element ◽  
Hip Fracture ◽  
Finite Element Model ◽  
Element Model ◽  
Fracture Prediction

Finite Element Analysis of Proximal Femur QCT Scans for the Assessment of Hip Fracture Risk In Older Men

2008 ◽  
Vol 11 (3) ◽  
pp. 467-468 ◽  
Author(s):  
Tony M. Keaveny ◽  
Lynn M. Marshall ◽  
Carrie M. Nielson ◽  
Steven R. Cummings ◽  
Paul F. Hoffmann ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Hip Fracture ◽  
Fracture Risk ◽  
Proximal Femur ◽  
Older Men ◽  
Element Analysis ◽  
Hip Fracture Risk

scholarly journals Physical validation of a patient-specific contact finite element model of the ankle

2007 ◽  
Vol 40 (8) ◽  
pp. 1662-1669 ◽  
Author(s):  
Donald D. Anderson ◽  
Jane K. Goldsworthy ◽  
Wendy Li ◽  
M. James Rudert ◽  
Yuki Tochigi ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Patient Specific ◽  
Specific Contact
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