[Functional outcomes in postoperative total knee arthroplasty with patella denervation compared to no denervation].

Abstract

Introduction: knee arthroplasty can generate complications, but a benefit in quality of life. The objective of this research was to determine the functional results in patients with total knee arthroplasty with denervation of prosthetic patella compared to no denervation.

Material and methods: a prospective and longitudinal study was performed in patients who underwent total knee arthroplasty during March 2021 to September 2021, applying questionnaires with knee functional scales, such as KSS which evaluates knee functional outcomes. Data were analyzed using descriptive and inferential statistics with Mann Whitney U test.

Results: a total of 119 postoperative total knee arthroplasty patients were stratified: group 1 (with prosthetic patella denervation with 57 members (48% of the total)) and group 2 (without patella denervation with 62 members (52% of the total)). Pain assessment with KSS scale was 41.6 points for group 1 and 41 points for group 2. The evaluation of range of motion with KSS scale was 19.7 ± 3.2 points for group 1, and 18.9 ± 3 points for group 2; use of stairs in group 1 with 35.5 ± 5.6 points and without group 2 with 35 ± 5 points, help in walking 5.8 points in group 1 and 5.7 for group 2.

Conclusion: no significant differences were observed in the functional results in post-surgical total knee arthroplasty patients with denervation of the prosthetic patella compared to no denervation.