Abstract

Introduction: The number of total knee replacements performed (TKR) is increasing and so are patient expectations and functional demands. The mean age at which orthopedic surgeons may indicate TKR is decreasing, and therefore return to sport (RTS) after TKR is often an important expectation for patients. The aim of this study was to analyze the mid-term RTS, recreational activities, satisfaction level, and forgotten joint level after TKR. Methods: Between January 2015 and December 2016, 536 TKR (same implant design, same technique) were performed in our center. The mean age at survey was 69 years with a mean follow-up of 43 months. All patients who did not have a follow-up in the last 6 months were called. Finally, 443 TKR were analyzed. RTS was assessed using the University of California Los Angeles Scale (UCLA), forgotten joint score (FJS), and Satisfaction Score. Results: In this study, 85% of patients had RTS after TKR with a mean UCLA score increasing from 4.48 to 5.92 and a high satisfaction rate. Satisfaction with activity level was 93% (satisfied and very satisfied patients). The RTS is more important for people with a higher preoperative UCLA score and a lower American Society of Anesthesiologist score (ASA). Each point increase in ASA score is associated with reduced probability to RTS by 52%. Discussion: RTS and recreational activity were likely after TKR with a high satisfaction score. Preoperative condition and activity are the two most significant predictive factors for RTS. Level of evidence: Retrospective case series, level IV.

Highlights

  • The number of patients suffering from osteoarthritis (OA) will increase dramatically in the future, and the number of total knee replacement (TKR) too

  • Multivariate analysis shows a significant difference in return to sport according to preoperative University of California Los Angeles Scale (UCLA) scores (p < 0.001)

  • A higher American Society of Anesthesiologist score (ASA) score was a negative predictive factor for return to sport (RTS) (p < 0.005), with each increase in ASA of one point being associated with a reduction of RTS probability by 52%

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Summary

Introduction

The number of patients suffering from osteoarthritis (OA) will increase dramatically in the future, and the number of total knee replacement (TKR) too. This increase is multifactorial: improved life expectancy, increasing obesity, and younger patients with knee OA secondary to trauma or other reasons. The younger population often expects to maintain an active lifestyle without pain, or stiffness. TKR provides functional improvement in patients with advanced knee OA [3, 4]. Evidence suggests a full return to active life after TKR is possible [5, 6], many orthopedic surgeons still prefer to advise limited sporting activities postoperatively

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