1996 Volume 45 Issue 1 Pages 137-139
The authors report three cases of symptomatic severe (more than 50%) spondylolisthesis. Two cases were grade III sondylolisthesis, and one case was spondyloptosis. First case (%slip: 50) was treated by in situ posterolateral fusion (PLF) without instrumentation. Second case (%slip: 100) was treated by both posterior lumbar interbody fusion (PLIF) and PLF with pedicle scerw, The Last case (%slip: 65), which showed a neurological deficit, was reduced with a pedicle screw and fixed by PLIF and PLF. A pseudoarthrosis developed in the first case, but progression of the slip did not occur. The other two cases had solid fusion and symptoms completely resolved.
No neurological complications were observed in this series. We concluded one stage PLIF and PLF with pedicle screw system was a suitable procedure for severe spondylolisthesis.
