1987 年 35 巻 3 号 p. 905-908
15 cases over 1 year after antero-posterior combined operation f or degenerative spondylolisthesis were clinically investigated. Indication of this operation was the cases in which instability and posterolateral compression had been combined. Preoperative and postoperative mean slipping rates were 16% and 8.4% respectively. Bone union was obtained in all cases. Postoperative results were satisfactory in 14 of 15 cases.