16 cases attacked with lumbar spondylolisthesis,including 7 cases of grade Ⅰ, 6 cases of Ⅱ and 3 cases of Ⅲ,have been treated with RF plate and Chinese drugs sinve 1992 and followed up for 3 to 32 months. The results showed that,excep that no evident improvement in one case and the backward slipping due to over-correction in another case, their symptoms and signs were basically disappeared and the improvement in olisthy over one grade and m0re was obtained in remaining 14 cases. The implanted bone had fused with the vertebrae in cases over 6 month after operation. No injuries of cauda equina and nerve roots were found in all cases. The writers considered that RF plate has the advantages of the less fixative segments,the satisfactory reduction and the firm internal fixati0n; and that the combination of RF plate with Chinese drugs is advantageous to the fusion of implanted bone and the diminution of postoperative Complications.
