Abstract
Treatment options and surgical decision for grade 3-4 gonarthrosis remains controversial. We aimed to compare the pain level, muscle strength, physical performance, lower extremity functions, and other physical activity levels between patients who underwent arthroplasty and those who received conservative management for grade 3-4 gonarthrosis. This prospective analytical observational study was conducted in a tertiary referral hospital. A total of 30 unicompartmental knee arthroplasty (UKA) and 30 total knee arthroplasty (TKA) patients as two different study groups and 30 patients were treated conservatively as the control group were included. The rehabilitation and complication rates were recorded. The values of the range of motion, quadriceps diameter, were measured and also the isokinetic muscle strength, pick-up, repeated sit-to-stand, stair ascending and descending, straight-line walking, timed up and go, and 20-m walk tests, the knee injury and osteoarthritis-outcome-score (KOOS), the hospital for special-surgery-knee-score (HSS), and Oxford-Knee-Score (OKS) were performed. Postoperative rehabilitation and complication rates were significantly higher in the TKA group compared to the UKA group (p = 0.029 and p = 0.026, respectively). Six months after the treatment, the knee extension muscle strength value at 180°/s, knee flexion degree, total work flexion, stair ascending, VAS at night, all KOOS symptom, pain and daily function and total scores in the UKA group was significantly different than the TKA and the control groups (p < 0.001). Total work extension values, knee flexion degree, in the control group were found to be significantly higher than the TKA group (p = 0.033, p < 0.001, respectively). The UKA was significantly superior to TKA and conservative treatment concerning pain, muscle strength, and quality of life. IIa.
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