臀筋膜挛缩症亦有称之为臀肌纤维化、臀大肌挛缩症、注射性臀大肌挛缩症等.此症多见于小儿,且多为双侧,长期反复肌肉注射是本症常见诱因.我院自1989年开始治疗此症,采用的是臀筋膜延长术,“开窗”的手术方法.1992年后我们改用小切口臀筋膜切除或部分切除术治疗本症,共诊治19例,经远期疗效观察均取得较满意的疗效,现报道如下.1 临床资料1.1 一般资料 本组男13例,女6例.年龄3.5～12岁.病变双侧为12例.所有病例均有臀部注射史,双侧髓关节X线检查无异常,身体发育正常偏瘦,均有患侧臀部凹陷.其主要临床表现为:行走时有“外八字步态”(或称“鸭形步态”),下蹲时患肢外展、外旋,患肢足跟部不能着地,直腿抬高30°时患肢必须外翻才能屈曲,内收受限,双膝不能并拢.双侧患儿屈曲侧卧,上侧膝部悬空.1.2 手术方法 患儿侧卧、下肢伸直.切口自股骨大粗隆上 Buttocks fascia contracture also known as gluteal muscle fibrosis, gluteus maximus contracture, injection of gluteus contracture, etc. This disease more common in children, and mostly bilateral, long-term repeated intramuscular injection is a common cause of this disease .In our hospital since 1989 to treat the disease, the use of the gluteal fascia extension, “window” method of operation .1992 we use a small incision or partial fascia resection of the disease, a total of diagnosis and treatment 19 cases, the long-term efficacy of observation have achieved more satisfactory results are reported below .1 Clinical data 1.1 General Information The group of 13 males and 6 females. Age 3.5 to 12 years. Bilateral lesions were 12 cases. All cases All had a history of buttocks injection, both sides of the X-ray examination of myelinated joints without abnormalities, normal physical development of thin, have ipsilateral buttocks depression. The main clinical manifestations: walking “outside the character gait” (or “duck Gait ”), squatting limb outreach, external rotation, limb heel can not be ground, straight leg raised 30 ° when the limb must evert to flexion, adduction limit, knees can not be close. Lateral flexion of the lateral children, the upper knee vacant .1.2 surgical methods in children with lateral, lower extremity straight incision from the greater trochanter on the femur