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J Arthroplasty. 2012 Sep;27(8 Suppl):99-105. doi: 10.1016/j.arth.2012.03.044. Epub 2012 May 31.

Unicompartmental knee arthroplasty relieves pain and improves function more than total knee arthroplasty.

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1
Center for Hip and Knee Replacement, New York–Presbyterian Hospital at Columbia University, New York, New York 10032, USA.

Abstract

This study compared outcomes as assessed by 12-item Short-Form Health Survey (SF-12) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) between patients who underwent unicompartmental (UKA) and patients who underwent total knee (TKA) arthroplasty. We prospectively collected preoperative demographic and SF-12 and WOMAC data on 128 TKAs and 70 UKAs. Postoperatively, SF-12 and WOMAC outcomes were recorded during annual follow-up visits. At baseline, patients who underwent UKA had a higher Charlson Comorbidity Index than patients who underwent TKA; otherwise, preoperative characteristics were similar. At a mean follow-up of 3.0 years for UKA and 2.9 years for TKA, patients who underwent UKA reported higher SF-12 physical component and mental component scores and WOMAC pain/stiffness/physical function scores (confirmed with multivariate analysis). Furthermore, patients who underwent UKA had significantly larger improvements in both SF-12 outcomes and WOMAC pain and physical function scores from baseline than did patients who underwent TKA.

PMID:
22658232
DOI:
10.1016/j.arth.2012.03.044
[Indexed for MEDLINE]

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