[Ventral interligamental-intercorporal spondylodesis in spondylolisthesis].

From November 1982 to March 1986 ventral interligamental intercorporal spondylodesis was accomplished at 69 patients with spondylolisthesis staging from MEYERDING I-IV in the vertebral segments L 4-5 and L 5-S 1. By the spondylodesis we succeeded in 90% of cases in attaining a firm osseous fusion of the vertebral moving segment. In 85% we gained a good clinical result. The period of follow-up is on average of 26 months. The average age of the patients is 38.8 years.