The influence of surgical factors on dislocation of the meniscal bearing after Oxford medial unicompartmental knee replacement: A case-control study
- Authors
- Lee S.Y.; Bae J.H.; Kim J.G.; Jang K.M.; Shon W.Y.; Kim K.W.; Lim H.C.
- Issue Date
- 2014
- Publisher
- British Editorial Society of Bone and Joint Surgery
- Citation
- Bone and Joint Journal, v.96 B, no.7, pp 914 - 922
- Pages
- 9
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Bone and Joint Journal
- Volume
- 96 B
- Number
- 7
- Start Page
- 914
- End Page
- 922
- URI
- https://scholarworks.korea.ac.kr/kumedicine/handle/2020.sw.kumedicine/30379
- ISSN
- 2049-4394
2049-4408
- Abstract
- The aim of this study was to evaluate the risk factors for dislocation of the bearing after a mobile-bearing Oxford medial unicompartmental knee replacement (UKR) and to test the hypothesis that surgical factors, as measured from post-operative radiographs, are associated with its dislocation From a total of 480 UKRs performed between 2001 and 2012, in 391 patients with a mean age of 66.5 years (45 to 82) (316 female, 75 male), we identified 17 UKRs where bearing dislocation occurred. The post-operative radiological measurements of the 17 UKRs and 51 matched controls were analysed using conditional logistic regression analysis. The postoperative radiological measurements included post-operative change in limb alignment, the position of the femoral and tibial components, the resection depth of the proximal tibia, and the femoral component-posterior condyle classification. We concluded that a post-operative decrease in the posterior tibial slope relative to the pre-operative value was the only significant determinant of dislocation of the bearing after medial Oxford UKR (odds ratio 1.881; 95% confidence interval 1.272 to 2.779). A postoperative posterior tibial slope < 8.45° and a difference between the pre-operative and postoperative posterior tibial slope of > 2.19° may increase the risk of dislocation. © 2014 The British Editorial Society of Bone & Joint Surgery.
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Collections - 2. Clinical Science > Department of Orthopedic Surgery > 1. Journal Articles
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