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KMID : 1144520200320010047
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Knee Surgery & Related Research
2020 Volume.32 No. 1 p.47 ~ p.47
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Unicompartmental vs. segmental bicompartmental vs. total knee replacement: comparison of clinical outcomes
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Al-Dadah Oday
Hawes Georgina
Chapman-Sheath Philip J.
Tice John William
Barrett David S.
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Abstract
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Purpose: Combined medial tibiofemoral and symptomatic patellofemoral osteoarthritis is not amenable to unicompartmental knee replacement (UKR). Total knee replacement (TKR) is an invasive option in younger adults with high functional demands. The aim of this study was to compare the clinical outcome of patients who have undergone UKR, bicompartmental knee replacement (BKR) and TKR up to 2?years post-operatively.
Materials and methods: This prospective study comprised 133 subjects including 30 patients in the medial UKR group, 53 patients in the BKR group (combined medial UKR with patellofemoral joint replacement) and 50 patients in the TKR group. All subjects were evaluated using the Oxford Knee Score (OKS) and the Western Ontario and MacMaster Universities Osteoarthritis Index (WOMAC). Patients in each group were assessed using both scoring systems pre-operatively and 6?months, 1?year and 2?years post-operatively.
Results: Significant improvement of OKS was found at 6?months compared to baseline for UKR (22.7 to 38.1, p?=?0.046), BKR (22.6 to 36.8, p?
Conclusion: The magnitude of clinical improvement following knee replacement is greatest at 6?months; thereafter, only modest improvements continue to occur. This study also found no significant differences of outcomes at 2?years after surgery among UKR, BKR and TKR. BKR is a good alternative option for combined symptomatic medial and patellofemoral arthritis of the knee.
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KEYWORD
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Bicompartmental, Unicompartmental, Total knee replacement, Arthroplasty, Clinical outcome scores
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