作者报告一例由于干骺端软骨发育不良(MCD,Schmid 型)引起寰枢椎脱位(AAD)所致脊髓病,手术治疗后,神经系统症状好转。患者男性,10岁8个月。因9岁时身高相当于6岁骨龄,无内分泌学异常。X 线示下肢近端骨干端边缘不齐,诊断为干骺端软骨发育不良(Schmid 型)。以后逐渐出现头向右歪,走路易摔倒,右上肢运动障碍和右枕部麻木而入院。既往家族无神经肌肉病史和近亲无血缘结婚史,8岁时头部外伤,但无神经系统异常。检 The authors report a case of myelopathy due to atlantoaxial dislocation (AAD) due to metaphyseal cartilage dysplasia (MCD, Schmid type) and neurologic symptoms after surgery. Male patient, 10 years and 8 months. Due to the age of 9 years old equivalent to 6 years old bone age, no endocrine abnormalities. X-ray showed proximal edge of the lower extremity of the missing edge, diagnosed as metaphyseal cartilage dysplasia (Schmid type). Later gradually appear head to right crooked, walking easily fall, right upper extremity movement disorders and numbness of the right occipital and hospitalization. Previous family had no history of neuromuscular disease and no related marital history of marriage, head injury at 8 years of age, but no neurological abnormalities. Check