環椎後弓欠損の1例
1993 年 42 巻 2 号 p. 615-617
詳細
1993 年 42 巻 2 号 p. 615-617
A rare case of total aplasia. of the posterior arch of the atlas is presented. A 67-year-old man complained of left forearm numbness. X-ray and CT findings showed a complete absence of the posterior arch of the atlas. No bone or catilage was seen there on MRI. A week later he had been completely free of symptons with no treatment.
This case is the second report of total aplasia of the posterior arch of the atlas in Japan.
