The Effect of Surface Morphology on the Primary Fixation Strength of Uncemented Femoral Knee Prosthesis: A Cadaveric Study

被引：16

作者：

Berahmani, Sanaz ^{[1
]}

Janssen, Dennis ^{[1
]}

Wolfson, David ^{[2
]}

Rivard, Kori ^{[3
]}

Malefijt, Maarten de Waal ^{[4
]}

Verdonschot, Nico ^{[1
,5
]}

机构：

[1] Radboud Univ Nijmegen Med Ctr, Orthopaed Res Lab, NL-6500 HB Nijmegen, Netherlands

[2] DePuy Synthes Joint Reconstruct, Leeds, W Yorkshire, England

[3] DePuy Synthes Joint Reconstruct, Warsaw, IN USA

[4] Radboud Univ Nijmegen Med Ctr, Dept Orthopaed, Nijmegen, Netherlands

[5] Univ Twente, Lab Biomech Engn, NL-7500 AE Enschede, Netherlands

来源：

JOURNAL OF ARTHROPLASTY | 2015年 / 30卷 / 02期

关键词：

uncemented femoral knee prosthesis; surface morphology; primary fixation strength; insertion force; bone mineral density; anteroposterior dimension; COATED IMPLANTS; ALIGNMENT; ARTHROPLASTY; REPLACEMENT; STABILITY; HYBRID;

D O I：

10.1016/j.arth.2014.09.030

中图分类号：

R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];

学科分类号：

摘要：

We investigated the effect of surface morphology on the mechanical performance of uncemented femoral knee prosthesis. Eighteen implants were implanted on nine paired femurs and then pushed-off (left legs: a novel surface morphology; right legs: Porocoat as baseline). Bone mineral density (BMD) and anteroposterior dimension were not significantly different between groups. The insertion force was not significantly different, however, the loosening force was significantly higher in the novel group (P = 0.007). BMD had a direct relationship with the insertion and loosening force (P < 0.001). The effect of surface morphology on implant alignment was very small. We conclude that the surface properties create a higher frictional resistance, thereby providing a better inherent stability of implants featuring the novel surface morphology. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：300 / 307

页数：8

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