Effect of the stiffness of bone substitutes on the biomechanical behaviour of femur for core decompression

被引：8

作者：

Tran, T. N. ^{[1
,2
]}

Kowalczyk, W. ^{[2
]}

Hohn, H. P. ^{[3
]}

Jaeger, M. ^{[1
]}

Landgraeber, S. ^{[1
]}

机构：

[1] Univ Duisburg Essen, Univ Hosp Essen, Dept Orthopaed, Hufelandstr 55, D-45147 Essen, Germany

[2] Univ Duisburg Essen, Chair Mech & Robot, Lotharstr 1, D-47045 Duisburg, Germany

[3] Univ Duisburg Essen, Inst Anat, Hufelandstr 55, D-45147 Essen, Germany

来源：

MEDICAL ENGINEERING & PHYSICS | 2016年 / 38卷 / 09期

关键词：

Femoral head necrosis; Core decompression; Bone substitute; Fracture risk; Finite element simulation; Micromotion; Interfacial stress; FINITE-ELEMENT MODELS; FEMORAL-HEAD; AVASCULAR NECROSIS; MECHANICAL CONDITIONS; OSTEONECROSIS; FRACTURE; IMPLANTS; INGROWTH; HIP; INTERFACE;

D O I：

10.1016/j.medengphy.2016.05.008

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Core decompression is the most common procedure for treatment of the early stages of osteonecrosis of the femoral head. The purpose of this study was to compare the biomechanical performance of four different bone graft substitutes combined with core decompression. Subject-specific finite element models generated from computed tomography (CT) scan data were used for a comprehensive analysis. Two different contact conditions were simulated representing states of osseointegration at the interface. Our results showed that the use of a low-stiffness bone substitute did not increase the risk of femoral fracture in the early postoperative phase, but resulted in less micromotion and interfacial stresses than high-stiffness bone substitutes. (C) 2016 IPEM. Published by Elsevier Ltd. All rights reserved.

引用

页码：911 / 916

页数：6

共 41 条

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