Posterior intervertebral bone graft fusion and pedicle screw internal fixation for recurrent lumbar intervertebral disc protrusion

Abstract

Objective To investigate the clinical efficacy of posterior intervertebral bone graft fusion and pedicle screw internal fixation for recurrent lumbar intervertebral disc protrusion (IDP).Methods A retrospective study was conducted in data of 19 cases with recurrent lumbar IDP in our hospital between April 2002 and October 2007,including clinical manifestations,primary and secondary approaches of surgery,post-surgical outcome and prognosis. Results Posterior intervertebral bone graft fusion and pedicle screw internal fixation for recurrent lumbar IDP yielded excellent outcome in 84. 2% (16/19) of the patients,with a total response rate of 94.7% (18/19). The JOA score of lower back pain was 22.5±0.9 after procedure vs 10.0± 1.9 before treatment (P<0.05). Follow-up revealed that all but one patient experienced significant improvement in lower back pain and good intervertebral bone graft fusion without instable spinal column. Conclusion Posterior intervertebral bone graft fusion and pedicle screw internal fixation is effective to relieve lower back pain,promote bony union of adjacent vertebrae and resume spinal stabilization in patients with recurrent lumbar IDP. Key words: Intervertebral disk displacement; Recurrence; Surgical procedures,operative; Pedicle screw; Interbody fusion