1984 年 32 巻 3 号 p. 675-677
A 34-year-old man with cretinism complained of motor and sensory distrubance of the extremities. The neurological examination revealed spastic paralysis. Roentgenograms of the cervical spine showed an atlanto-axial dislocation with os odontoideum. The transoral anterior atlanto-axial fusion described by Thuyama was recommended. Reduction and fusion is satisfactly at 10 months after surgery. We did not find any other case of atlanto-axial dislocation with cretinism, in the literature.