Results of a trial of anterior or circumferential lumbar fusion in the treatment of severe isthmic spondylolisthesis in young patients.

SummaryThe radiological and clinical results in 27 patients operated on for severe isthmic spondylolisthesis at age < 20 years with uninstrumented anterior interbody fusion alone in 11 or combined anterior and posterolateral (circumferential) fusion in 16 are reported. The mean follow-up time was 5.