Study: Total knee arthroplasty outcome for stiff knee with o
The aim of this study was to evaluate the influence of 27 antirheumatic drug treatment on knee function of stiff knee patients after total knee arthroplasty (TKA).

27 patients of active RA or AS with stiff knees were included in this study. And they were divided into two groups according to continue antirheumatic drug treatment or not after TKA: the therapeutic group and the controlled group. The outcomes were assessed by Knee Society Score (KSS), Visual Analogue Scale (VAS), range of motion (ROM) (at week 6, month 6, year 1, and year 2), “Forgotten Joint” Scale (FJS), with or without crutch, satisfaction, and revision (at year 2).

--The mean follow-up time was 51 months. The KSS was higher at week 6 after TKA in the therapeutic group; however, the functional scores of KSS at month 6, year 1, and year 2 in the controlled group were more points improved.

--The therapeutic patients preferred the knee more at month 6, year 1, and year 2. The differences of KSS clinical scores, VAS, ROM, Crutch and FJS between the two groups were not statistically significant.

Finally, sequential antirheumatic medication treatment after TKA had no discernible effect on postoperative KSS in patients with stiff knees, but it did enhance patient satisfaction.