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| 題名: | Effects of stemmed and nonstemmed hip replacement on stress distribution of proximal femur and implant |
| 作者: | 曾清秀;Chen, Chun-Ming;Tsai, Wen-Chi;Lin, Shang-Chih;Tseng, Ching-Shiow |
| 貢獻者: | 工學院機械工程學系 |
| 關鍵詞: | Analysis;Arthroplasty, Replacement, Hip - instrumentation;Arthroplasty, Replacement, Hip - methods;Biomechanics;Bone surgery;Comparative analysis;Computer software industry;Epidemiology;Femur - diagnostic imaging;Femur Head - diagnostic imaging;Finite Element Analysis;Hip Joint - diagnostic imaging;Humans;Interfaces;Internal Medicine;Load;Male;Medicine;Medicine & Public Health;Musculoskeletal diseases;Orthopedics;Orthopedics and biomechanics;Prosthesis Design - methods;Radiography;Rehabilitation;Research Article;Rheumatology;Sports Medicine;Stress, Mechanical;Transplants & implants;Young Adult |
| 日期: | 2014-09-26 |
| 上傳時間: | 2026-04-23 15:04:38 (UTC+8) |
| 出版者: | London: BioMed Central |
| 摘要: | 摘要： Background Despite improvements in shape, material, and coating for hip stem, both stress shielding and aseptic loosening have been the major drawbacks of stemmed hip arthroplasty. Some nonstemmed systems were developed to avoid rasping off the intramedullary canal and evacuating the bone marrow due to stem insertion. Methods In this study, the finite-element models of one intact, one stemmed, and two nonstemmed femora with minimal removal of the healthy neck were investigated to evaluate their biomechanical effects. The resurfacing (ball-shaped) and fitting (neck-shaped) systems were respectively selected as the representative of the ready- and custom-made nonstemmed implants. The stress distribution and interface micromotion were selected as the comparison indices. Results The results showed that stress distributions of the two nonstemmed femora are consistently more similar to the intact femur than the stemmed one. Around the proximal femur, the stem definitely induces the stress-shielding phenomenon of its counterparts. The fitting system with the anatomy-shaped cup can make intimate contact with the neck cortex and reduce the bone-cup micromotion and the implant stress. Comparatively, the reamed femoral head provides weaker support to the resurfacing cup causing higher interfacial micromotion. Conclusions The reserved femoral neck could act as the load-transferring medium from the acetabular cup, femoral neck, to the diaphysial bone, thus depressing the stress-shielding effect below the neck region. If the hip-cup construct can be definitely stabilized, the nonstemmed design could be an alternative of hip arthroplasty for the younger or the specific patients with the disease limited only to the femoral head.
其他題名： BMC Musculoskelet Disord
出版者： London: BioMed Central
出版日期： 2014-09-26
出處： BMC musculoskeletal disorders, 2014-09, Vol.15 (1), p.312-312, Article 312
資源來源： EBSCOhost Academic Search Premier
版權： Chen et al.; licensee BioMed Central Ltd. 2014 This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver ( ) applies to the data made available in this article, unless otherwise stated.
版權： COPYRIGHT 2014 BioMed Central Ltd.
版權： 2014 Chen et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
版權： Chen et al.; licensee BioMed Central Ltd. 2014
識別號： ISSN: 1471-2474
識別號： EISSN: 1471-2474
識別號： DOI: 10.1186/1471-2474-15-312
識別號： PMID: 25257699 |
| 顯示於類別: | [機械工程學系] 期刊論文
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