Femoral fixation pattern in cemented Oxford unicompartmental knee arthroplasty - An experimental cadaver study

被引:17
作者
Clarius, M. [1 ]
Mohr, G. [1 ]
Jaeger, S. [1 ]
Seeger, J. B. [1 ]
Bitsch, R. G. [1 ]
机构
[1] Univ Heidelberg, Dept Orthopaed Surg, D-69118 Heidelberg, Germany
关键词
Unicompartmental; UKA; Fixation pattern; Component loosening; Femoral component; 10-YEAR SURVIVAL; BONE INTERFACE; SHEAR-STRENGTH; REPLACEMENT; REVISION;
D O I
10.1016/j.knee.2009.11.006
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
100224 [整形外科学];
摘要
Femoral component loosening is a rare but serious complication in cemented Oxford unicompartmental knee arthroplasty (OUKA) In a cadaver study OUKA was performed in 24 knees to evaluate the femoral fixation pattern Due to the geometry of bone and implant three different zones were identified Complete cement mantles and good interdigitation were found in the spherical part of the implant (zone 1) and around the peg (zone 3) which implies that these are most important for implant fixation The posterior plane facet (zone 2) is the weak point of the interface due to incompleteness of the cement mantle and a lack of interdigitation This study suggests that the cancellous bone in zone 2 and the drill holes in sclerotic bone areas should be filled with cement and pressurised prior to component seating (C) 2009 Elsevier B V All rights reserved
引用
收藏
页码:398 / 402
页数:5
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