Comparing Return to Sports After Patellofemoral and Knee Arthroplasty in an Age- and Sex-Matched Cohort.

BACKGROUND

Return to sports is an important outcome in ensuring patient satisfaction after knee-replacement surgery. However, few studies have directly compared unicompartmental knee arthroplasty (UKA), total knee arthroplasty (TKA), and patellofemoral arthroplasty (PFA).

HYPOTHESIS

TKA will result in lower rates of return to sports than either UKA and PFA due to increased complexity and invasiveness.

STUDY DESIGN

Cohort study; Level of evidence, 3.

METHODS

Patients who underwent UKA, TKA, or PFA with 1 to 2 years of follow-up were sent a questionnaire regarding return to sports, satisfaction with return to sports, pain, the University of California, Los Angeles activity scale, and the High Activity Arthroplasty Score (HAAS). The patients who underwent either TKA or UKA were matched 2:1 with regard to age and sex to patients who underwent PFA. Differences were compared using analysis of variance,

RESULTS

A total of 202 patients were eligible. After matching, the final cohort consisted of 23 PFA patients, 46 UKA patients, and 46 TKA patients. The majority of patients were female (87%), and the mean ± SD age was 56 ± 9.1 years. The UKA group had higher HAAS values than the TKA group pre- and postoperatively (9.9 vs 7.1 [

CONCLUSION

Patients who underwent UKA reported better activity scores and return-to-sports rates than patients who had TKA and PFA. No differences were found in improvement after surgery, suggesting that preoperative differences were reflected postoperatively. These findings inform shared decision making and can help to manage patient expectations after surgery.

Informations de copyright

© The Author(s) 2020.

Déclaration de conflit d'intérêts

One or more of the authors has declared the following potential conflict of interest or source of funding: S.S. has received research support from Fidia Pharma, consulting fees from DePuy/Medical Device Business Systems and Pfizer, honoraria from Vericel, and hospitality payments from Stryker; her spouse has received research support from Fidia Pharma, JRF Ortho, and NuTech/Organogenesis; consulting fees from Flexion, JRF Ortho, Moximed, NuTech/Organogenesis, Smith & Nephew, and Vericel; and royalties from NuTech/Organogenesis; and is a board member for Aesculap Biologics. A.P. has received educational support from Arthrex; consulting fees from Exactech, Smith & Nephew, Stryker, and Zimmer Biomet; nonconsulting fees from Arthrex and Smith & Nephew; and royalties from Zimmer Biomet; and he has ownership interests in Engage Surgical, Knee Guardian, PerfectFit, and Therma1. AOSSM checks author disclosures against the Open Payments Database (OPD). AOSSM has not conducted an independent investigation on the OPD and disclaims any liability or responsibility relating thereto.