Biomechanics characteristics of calcar reconstruction using different methods in senile intertrochanteric fractures

doi:10.3969/j.issn.2095-4344.2017.23.002

Abstract

Abstract:

BACKGROUND: Calcar plays an important role in hip arthroplasty. The reconstruction of calcar includes bone cement reconstruction and restoration of fracture fragments, but there is some lack of knowledge about their comparative study.

OBJECTIVE: To analyze the biomechanical characteristics of remodeled calcar using bone cement reconstruction and restoration of fracture fragments in senile intertrochanteric fractures through three-dimensional finite element models.

METHODS: The remodeled calcar using restoration of fracture fragments (model A) or bone cement reconstruction (model B) in senile intertrochanteric fractures was obtained. The stress distribution on the bone interface and prosthesis, the overall stress and displacement of the two models were observed.

RESULTS AND CONCLUSION: (1) The maximal strain and stress on the bone interface and prosthesis of model A all were more than those of model B. The mean stresses at each node on the bone interface and prosthesis of model A all were significantly higher than those of model B (P < 0.05). (2) The maximum stress and maximum displacement values of the model A all were higher than those of model B. (3) These results show that the maximal stress and displacement values of the remodeled calcar using restoration of fracture fragments are higher than those of bone cement reconstruction in senile intertrochanteric fractures; the latter holds even stress distribution and better repair outcomes.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Arthroplasty, Replacement, Hip, Hip Fractures, Finite Element Analysis, Aged

CLC Number:

R318

Hou Li-gang. Biomechanics characteristics of calcar reconstruction using different methods in senile intertrochanteric fractures [J]. Chinese Journal of Tissue Engineering Research, 2017, 21(23): 3616-3621.

Figures/Tables 1

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