Abstract
BackgroundPatellar mobilization technique during total knee replacement (TKR) has been debated, with some suggesting that lateral retraction, rather than eversion, of the patella may be beneficial. This randomized controlled trial was to investigate the effects of patellar eversion on functional outcomes in TKR.Methods and analysisThis single-center, prospective, randomized controlled test will be conducted in Jingjiang People's Hospital. Primary end-stage osteoarthritis patients that prepared for unilateral TKR were randomized to one of two patellar exposure techniques during the primary total knee arthroplasty: lateral retraction or eversion. The informed consent will be acquired in each patient. The primary outcome was operation time, length of hospital stay, and straight leg raising time. Second outcomes including Insall-Salvati ratio; range of motion at 1 month, 3 months, and 1 year following TKR; visual analog scale (VAS) at 1 month, 3 months; and Knee Society Score (KSS) score at 1 year following TKR. The significance level was defaulted as P < .05.ResultsResults will be published in relevant peer-reviewed journals.ConclusionOur study aims to systematically assess the functional outcomes of patellar eversion for TKR patients, which will provide clinical guidance for TKR patients.
Highlights
Total knee replacement (TKR) is among the most common elective procedures performed worldwide [1, 2]
Our study aims to systematically assess the functional outcomes of patellar eversion for total knee replacement (TKR) patients, which will provide clinical guidance for TKR patients
Lateral retraction of the patella is an alternative technique for TKR [7]
Summary
Total knee replacement (TKR) is among the most common elective procedures performed worldwide [1, 2]. Up to 20% of patients are dissatisfied or not completely satisfied with the outcome of TKR [3]. There is ongoing debate regarding whether or not the patella should be everted during TKR [8]. Zan et al [9] conducted a meta-analysis and found that no difference in clinical outcome between patella eversion and lateral retraction in TKR. Patellar mobilization technique during total knee replacement (TKR) has been debated, with some suggesting that lateral retraction, rather than eversion, of the patella may be beneficial.
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