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J Knee Surg 2021; 34(04): 422-426
DOI: 10.1055/s-0039-1696956
Original Article

High Medium-Term Survivorship of Cruciate-Retaining Total Knee Arthroplasties (110 Knees) for Valgus Deformity

Hosam E. Matar
1   Department of Orthopaedic Surgery, Wrightington Hospital, Wigan, Apley Bridge, United Kingdom
,
R. Thangaraj
1   Department of Orthopaedic Surgery, Wrightington Hospital, Wigan, Apley Bridge, United Kingdom
,
Akash Saraogi
1   Department of Orthopaedic Surgery, Wrightington Hospital, Wigan, Apley Bridge, United Kingdom
,
Videshnandan Raut
1   Department of Orthopaedic Surgery, Wrightington Hospital, Wigan, Apley Bridge, United Kingdom
› Institutsangaben Funding None.
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Abstract

The main purpose of this article is to evaluate the clinical outcomes and survivorship of cruciate-retaining (CR) knee arthroplasties for valgus deformity. This article is retrospective consecutive series of 110 valgus knees using CR implants with a minimum 2-year follow-up. Deformity correction was achieved using stepwise sequential soft tissue releases (iliotibial band, popliteus tendon, lateral collateral release through sliver femoral condylar osteotomy). Demographic data, range of movement, and degrees of deformity were collected. The Oxford Knee Score (OKS) was used as patients' reported outcome measure at final follow-up. One-hundred and four patients (110 knees) were included (87 females/17 males) with mean age of 68.7 years. Primary diagnosis was osteoarthritis in 85 patients and rheumatoid arthritis in 19 patients. Mean follow-up was 5.5 years (median: 5 years; range: 2–14 years). Preoperative valgus deformity was measured radiographically using the mechanical tibiofemoral angle with a mean 18.6° (standard deviation [SD]: 7.5; range: 11–38°). At final follow-up, mechanical tibiofemoral angle was 3.8° (SD: 1.97; range: 2–8°). A p-value was <0.0001 and mean OKS was 42 (SD: 5.4; range: 36–48) suggesting satisfactory patients' reported outcomes with no implant revision for any cause. CR implants for valgus knees using staged soft tissue releases including sliver condylar osteotomy had excellent medium-term survivorship and satisfactory patient reported outcome measures. The Level of Evidence for this study is IV.

Keywords

cruciate-retaining knee - valgus deformity - survivorship - clinical outcomes

Note

The study was approved by the local research and clinical effectiveness department.




Publikationsverlauf

Eingereicht: 06. Mai 2019

Angenommen: 26. Juli 2019

Artikel online veröffentlicht:
18. September 2019

© 2019. Thieme. All rights reserved.

Thieme Medical Publishers, Inc.
333 Seventh Avenue, 18th Floor, New York, NY 10001, USA

 

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