The mid-term outcomes of the Oxford Domed Lateral unicompartmental knee replacement

Bone and Joint Journal - Tập 96-B Số 1 - Trang 59-64 - 2014
J. S. Weston-Simons1, Hemant Pandit1, Ben Kendrick1, C. Jenkins2, Karen Barker2, Christopher Dodd2, David Murray1
1Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences,, Botnar Research Centre, University of Oxford, Windmill Road, Headington, Oxford, OX3 7LD, UK.
2Nuffield Orthopaedic Centre, Oxford University Hospitals Trust, Headington, Oxford, OX3 7LD, UK.

Tóm tắt

Mobile-bearing unicompartmental knee replacements (UKRs) with a flat tibial plateau have not performed well in the lateral compartment, owing to a high dislocation rate. This led to the development of the Domed Lateral Oxford UKR (Domed OUKR) with a biconcave bearing. The aim of this study was to assess the survival and clinical outcomes of the Domed OUKR in a large patient cohort in the medium term.We prospectively evaluated 265 consecutive knees with isolated disease of the lateral compartment and a mean age at surgery of 64 years (32 to 90). At a mean follow-up of four years (sd 2.2, (0.5 to 8.3)) the mean Oxford knee score was 40 out of 48 (sd 7.4). A total of 12 knees (4.5%) had re-operations, of which four (1.5%) were for dislocation. All dislocations occurred in the first two years. Two (0.8%) were secondary to significant trauma that resulted in ruptured ligaments, and two (0.8%) were spontaneous. In four patients (1.5%) the UKR was converted to a primary TKR. Survival at eight years, with failure defined as any revision, was 92.1% (95% confidence interval 81.3 to 100).The Domed Lateral OUKR gives good clinical outcomes, low re-operation and revision rates and a low dislocation rate in patients with isolated lateral compartmental disease, in the hands of the designer surgeons.Cite this article: Bone Joint J 2014;96-B:59–64.

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Bone and Joint Journal

Tập 96-B Số 1

59-64

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