Anterior fibular strut grafting for the treatment of pseudoarthrosis in spondylolisthesis.

Ten patients with a failed posterior spinal fusion for symptomatic spondylolisthesis were treated with retroperitoneal anterior lumbosacral interbody fusion. A fibular strut allograft was placed, followed by posterolateral fusion and instrumentation. The mean follow-up was 40 months (range 24-60 months). All patients complained of back pain and leg pain before surgery. All patients achieved solid fusion at L5-S1. One patient developed pseudoarthrosis at L4-5 and improved symptomatically with no postoperative complications.