1病历报告患者男，14岁。因双膝肿胀半年，于1995年3月2日入院。双膝无疼痛，不热，无外伤史。既往患脊膜膨出致双膝屈曲畸形，近一年加重。查体：双侧绳肌挛缩，膝关节肿胀，皮温不高，关节腔积液，髌骨位置正常，浮髌试验阳性，于两侧髌骨上方股四头肌深处各触及半月形孤立的 1 medical record patient male, 14 years old. Due to swelling of his knees for six months, on March 2, 1995 admission. No knee pain, no heat, no history of trauma. Past suffering from meningocele caused by knee flexion deformity, increased in recent years. Physical examination: contralateral bilateral squeala contracture, knee swelling, skin temperature is not high, joint effusion, patellar position is normal, floating patella test was positive in the patella on both sides of the upper quadriceps reach the hemispherical isolated