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Comparison of functional outcomes between single-radius and multi-radius femoral components in primary total knee arthroplasty: a meta-analysis of randomized controlled trials

Knee Surgery & Related Research 2020년 32권 1호 p.52 ~ 52
김동휘, 이광철, Kim Hyun-Hak, 차동혁, Min Kyung-Dae, 이병일, 김준범, Kwon Sai-Won, 천동일, 김용범, Seo Gi-Won, 이정석, 박수연, 최형석,
소속 상세정보
김동휘 ( Kim Dong-Hwi ) - Chosun University Hospital Department of Orthopaedic Surgery
이광철 ( Lee Gwang-Chul ) - Chosun University Hospital Department of Orthopaedic Surgery
 ( Kim Hyun-Hak ) - Chosun University Hospital Department of Orthopaedic Surgery
차동혁 ( Cha Dong-Hyuk ) - Chosun University Hospital Department of Orthopaedic Surgery
 ( Min Kyung-Dae ) - Soonchunhyang University Hospital Department of Orthopaedic Surgery
이병일 ( Lee Byung-Ill ) - Smarton Hospital Department of Orthopaedic Surgery
김준범 ( Kim Jun-Bum ) - Soonchunhyang University Cheonan Hospital Department of Orthopaedic Surgery
 ( Kwon Sai-Won ) - Soonchunhyang University Cheonan Hospital Department of Orthopaedic Surgery
천동일 ( Chun Dong-Il ) - Soonchunhyang University Seoul Hospital Department of Orthopaedic Surgery
김용범 ( Kim Yong-Beom ) - Soonchunhyang University Seoul Hospital Department of Orthopaedic Surgery
 ( Seo Gi-Won ) - Soonchunhyang University Gumi Hospital Department of Orthopaedic Surgery
이정석 ( Lee Jeong-Seok ) - Soonchunhyang University Seoul Hospital Department of Orthopaedic Surgery
박수연 ( Park Su-Yeon ) - Soonchunhyang University Seoul Hospital Department of Biostatistics
최형석 ( Choi Hyung-Suk ) - Soonchunhyang University Seoul Hospital Department of Orthopaedic Surgery

Abstract


Purpose: Our purpose in the current meta-analysis was to compare the functional outcomes in patients who have received single-radius (SR) or multi-radius (MR) femoral components in randomized controlled trials (RCTs) for primary total knee arthroplasty (TKA). The hypothesis was that there would be no statistically significant difference between two groups in terms of functional outcomes.

Materials and methods: We searched the international electronic databases PubMed, Embase, and the Cochrane Central Register of Controlled Trials up to February 2020 for RCTs that compared functional outcomes of SR and MR femoral component designs after primary TKA. We performed a meta-analysis of nine RCTs using the Knee Society Score for the knee (KSS-knee), KSS-function, Knee Injury and Osteoarthritis Outcome Score (KOOS), Oxford Knee Score (OKS), degree of knee flexion, extension, and complications, including postoperative infection and revision surgery.

Results: The meta-analysis revealed no statistically significant differences in all the analyzed variables, including KSS-knee, KSS-function, KOOS, OKS, knee flexion, and knee extension. For postoperative complications, no statistically significant differences were detected for femoral component designs in postoperative infection or incidence of revision surgery between the two groups.

Conclusions: The current meta-analysis of RCTs did not show any statistically significant differences between SR and MR femoral component designs in terms of postoperative functional outcomes. Evaluated outcomes included functional outcome scores, degree of knee flexion, extension, and complications. However, because of the limited clinical evidence of this study owing to the heterogeneity between the included RCTs, a careful approach should be made in order not to arrive at definite conclusions.

키워드

Single-radius; Multi-radius femoral component; Total knee arthroplasty; Meta-analysis; Functional outcome; Randomized controlled trial

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