Clin Rheumatol. 1985 Mar;4(1):19-22. doi: 10.1007/BF02032312.
Five hundred and eight cases of early synovectomy of the knee in rheumatoid arthritis are reported from nine clinics in a retrospective multi-center follow-up study. Observation time covers at least ten years in each case. Sixty-five per cent of the cases are reported as being subjectively and objectively good. The mean roentgenological grade, according to Larsen, was 1.7 preoperatively and 2.7 at follow-up.
在一项回顾性多中心随访研究中，来自9家诊所报告了508例类风湿性关节炎膝关节早期滑膜切除术的病例。每个病例的观察时间至少为10年。65%的病例报告主观和客观情况良好。根据拉森（Larsen）分级，术前平均放射学分级为1.7，随访时为2.7。
