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Mid-Term Results of Oxford Medial Unicompartmental Knee Arthroplasty in Young Asian Patients Less than 60 Years of Age: A Minimum 5-Year Follow-up

유성호|곽창훈|강석웅|송무호|김부환|김영준
대한슬관절학회 (Korean Knee Society)|2017.06|Knee Surgery and Related Research|제29권 제2호|pp. 122-128

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키워드

osteoarthritisKneearthroplastyunicompartmentalMobile bearingasianyoung age

초록

purpose: The purpose of this study was to evaluate the efficacy of unicompartmental knee arthroplasty (UKA) in young active Asian patients by analyzing clinical outcomes, complications and survival rates.Materials and Methods: Eighty­two knees were evaluated with a minimum follow­up of 5 years after Oxford phase 3 UKA in patients less than 60 years of age at the time of surgery. Their mean age was 54.7 years (range, 44 to 59 years). The mean follow­up period was 8.9 years (range, 5.3 to 12 years). Kaplan–Meier survivorship analysis was used to estimate implant survival.results: Including 3 bearing dislocations, 1 medial tibial collapse and 1 lateral osteoarthritis, the total complication rate was 6.1% (5/82). Of the 3 cases of bearing dislocation, 2 cases were resolved by replacing with a thicker bearing and 1 case was converted to total knee arthroplasty (TKA) due to repeated dislocation. The two knees with a medial tibial collapse and a lateral osteoarthritis were converted to TKA. The 10­year cumulative survival rate using Kaplan­Meier survival method was 94.7% (95% confidence interval: 88.7%–100%).conclusions: Oxford medial UKA was reliable and effective in young active Asian patients providing good clinical results and survival rate in the mid­term follow­up.

Abstract

purpose: The purpose of this study was to evaluate the efficacy of unicompartmental knee arthroplasty (UKA) in young active Asian patients by analyzing clinical outcomes, complications and survival rates.Materials and Methods: Eighty­two knees were evaluated with a minimum follow­up of 5 years after Oxford phase 3 UKA in patients less than 60 years of age at the time of surgery. Their mean age was 54.7 years (range, 44 to 59 years). The mean follow­up period was 8.9 years (range, 5.3 to 12 years). Kaplan–Meier survivorship analysis was used to estimate implant survival.results: Including 3 bearing dislocations, 1 medial tibial collapse and 1 lateral osteoarthritis, the total complication rate was 6.1% (5/82). Of the 3 cases of bearing dislocation, 2 cases were resolved by replacing with a thicker bearing and 1 case was converted to total knee arthroplasty (TKA) due to repeated dislocation. The two knees with a medial tibial collapse and a lateral osteoarthritis were converted to TKA. The 10­year cumulative survival rate using Kaplan­Meier survival method was 94.7% (95% confidence interval: 88.7%–100%).conclusions: Oxford medial UKA was reliable and effective in young active Asian patients providing good clinical results and survival rate in the mid­term follow­up.

참고문헌 (29)

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