患儿刘某.男,5岁。因双下肢跛行.鸭步态半年。入院前因扁桃腺炎.臀部反复注射青霉素和链霉素混合液(右侧6次.左侧7次)。注射后两臀部硬节疼痛.热敷无效.跛行逐渐加重。否认胎疾.外伤,感染史。 检查:营养发育良好.步态呈短距离跨步相,双臀部触及与臀肌纤维方向一致的条索状硬块.质地硬.无 Liu children. Male, 5 years old. Due to double lower limb limp. Duck gait six months. Due to tonsillitis before admission, repeated injection of penicillin and streptomycin mixed solution (right 6 times, left 7 times). After injection, the buttocks are hard and painful, the heat is not effective, and the limp is gradually aggravated. Discrimination of fetal disease. Trauma, infection history. Check: nutritionally well developed gait was a short-distance step phase, double hip contact with the gluteal muscle fibers consistent with the direction of the cord-like lumps. Hard texture.