de Carvalho A, Graudal H, Jørgensen B
Acta Radiol Diagn (Stockh). 1980;21(1):115-21. doi: 10.1177/028418518002100114.
The severity of rheumatoid arthritis in 20 groups of limb joints was evaluated by means of 661 skeletal radiologic examinations on 188 patients. The severity of the disease was classified by grades 0 to 5 in accordance with Larsen's grading system and was related to the duration of the condition. The result differs at several points from results in other surveys.
通过对188例患者进行661次骨骼放射学检查，评估了20组四肢关节类风湿性关节炎的严重程度。根据拉森分级系统，疾病严重程度分为0至5级，并与病程相关。该结果在几个方面与其他调查结果不同。
