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介绍一种治疗急性化脓性髋关节炎后合并下肢不等长超过５．０ｃｍ患儿的方法。本组共治疗４例蔡氏ⅣＢ型新生儿急性化脓性髋关节炎后遗症患儿，年龄７～１３岁，临床症状有股骨头、颈的完全破坏，髋关节全或半脱位及双下肢不等长。术前均并发下肢其他关节化脓性炎症，术前用扫描图像法测量双下肢长度相差６．９～１４．００ｍ。采用外固定骨痂牵拉延长术治疗，３例外固定架为Ｉｌｉｚａｒｏｖ环形架，１例为Ｏｒｔｈｏｆｉｘ单侧架，牵拉后延长股骨４．５～１３．０ｃｍ。术后随访２．５～３．５年，其中３例可以不用支具独立行走。该方法疗效满意，牵拉治疗中应重视关节功能练习，一旦膝关节功能减退，则暂停一段时间，加强功能练习后再进行牵拉。
A method for the treatment of children with acute suppurative arthritis and more than 5.0 cm of lower extremity after the treatment of acute suppurative arthritis is introduced. The group was treated in 4 cases of Chua’s Ⅳ B neonatal acute suppurative sequelae of hip arthritis sequelae, aged 7 to 13 years old, the clinical symptoms of complete destruction of the femoral head and neck, total hip or subluxation and unequal length of both legs . Preoperative conjunctival inflammation of other joints were complicated by arthroscopy, preoperative scanning image method to measure the difference between the length of both lower extremities 6.9 ~ 14.00m. External fixation with callus elongation and extension surgery was performed. Three cases of external fixation were Ilizarov rings, one case of Orthofix unilateral scaffold. After stretching, the femur was 4.5 ~ 13.0 cm. The patients were followed up for 2.5 to 3.5 years, of which 3 cases could walk independently without brace. The method has satisfactory curative effect. In the treatment of traction, attention should be paid to joint functional exercises. Once the knee joint function is diminished, the procedure is suspended for a period of time, and the functional exercises are performed before pulling.