1997 Volvo Award winner in clinical studies - Fischgrund, J S; Mackay, M; Herkowitz, H N; Brower, R; Montgomery, D M; Kurz, L T (Degenerative lumbar spondylolisthesis with spinal stenosis: a prospective, randomized study comparing decompressive laminectomy and arthrodesis with and without spinal instrumentation, 1997)