Reduction and fusion of severe spondylolisthesis using halo-pelvic traction with a wire reduction device.

Seven patients with severe lumbosacral spondylolisthesis were treated by reduction of the displacement followed by stabilisation by anterior interbody fusion. In the two youngest patients full reduction was achieved by halo-pelvic traction. In the remainder halo-pelvic or femoral traction was combined with a posterior wire reduction device. All patients achieved a sound fusion with complete remission of symptoms.