Test on compressive properties of trabecular bone in proximal femur using digital image correlation technique
- VernacularTitle:图像相关法测试股骨近端骨小梁压缩特性
- Author:
Jian xiong MA
1
;
Hai tao LI
2
;
Xin long MA
3
;
Chun qiu ZHANG
4
;
Zhi bin WANG
5
;
Yang YANG
1
;
Tao MA
1
Author Information
1. Department of Orthopeadics, General Hospital of Tianjin Medical University
2. Department of Orthopeadics, General Hospital of Tianjin Medical University;Huanhu Hospital
3. Department of Orthopeadics, General Hospital of Tianjin Medical University; Department of Orthopaedics, Tianjin Hospital;The Integration of Traditional and Western Medicinal Academy of Orthopaedics of Tianjin
4. School of Mechanical Engineering,Tianjin University of Technology
5. Department of Orthopaedics, Tianjin Hospital
- Publication Type:Journal Article
- Keywords:
Femur;
Trabecular bone;
Digital image correlation;
Compression testing;
Elastic modulus;
Biomechanics
- From:
Journal of Medical Biomechanics
2011;26(4):E355-E360
- CountryChina
- Language:Chinese
-
Abstract:
Objective To improve the method used for traditional compression test to reflect the compressive elastic modulus of trabecular bone in proximal femur more accurately and investigate its biomechanical properties to provide experimental evidences for clinical treatment. Methods The properties of trabecular bone from normal cadaveric proximal femur(45~60 years old) were measured by the micro material mechanics testing system. Results The elastic modulus in the direction of principle compression and principle tension on trabecular bone were (335.26±183.85) MPa and (59.27±23.88) MPa, respectively. The biomechanical properties of trabecular bone in the direction of principle compression were significantly higher than those in its vertical direction.The displacement and strain distribution profiles under the loading were recorded, which showed to be asymmetric. Conclusions It is feasible to test the biomechanical properties of trabecular bone more accurately by the micro material mechanics testing system. The compressive properties of trabecular bone in proximal femur are obviously anisotropic and heterogeneous.
