One stage reduction and fusion for spondylolisthesis.

A new method of reduction and fixation of spondylolisthesis and spondyloptosis is described. It is carried out in one stage through a posterior approach. Two self-locking plates are fixed to the sacrum and two double threaded screws inserted into the body of L5. The position is restored by lifting L5 up to the plates. An interbody fusion is carried out with autologous bone grafts. The results in 51 cases, with a minimum follow up of 6 months, are reported.