Bone graft is essential for successful spinal fusion. So, we clinically assessed the effect of uniting grafted autologous bone.

Retrospective analysis is performed on 46 patients who had grade I or II, one segmental, degenerative spondyloiisthesis according to Meyerding classification and treated operatively by posterolateral fusion with posterior decompression and autologous iliac bone graft from January 1991 to June 1996. We got the data from simple anteroposterior, lateral, flexion- extension X-ray film at preoperative, postoperative and last follow-up period, and from clinical results at last OPD follow-up according to Kirkaldy-Willis criteria. We compared the union of grafted autologous bone with clinical results using X2-test. We also compared preoperative spinal instability, with/without instrumentation and intraoperative reduction with the union of grafted autologous bane and clinical results.

There was high significant correlation (P=0.000) between the union of grafted autologous bone and clinical results statistically.

This results suggest that the union of grafted autologous bone was an important factor in determing clinical results.