[Surgical treatment of lumbar spondylolisthesis with cages and transpedical screws].
OBJECTIVE
To observe the effect of threaded titanium cage and transpedical screw for the treatment of lumbar spondylolisthesis.


METHODS
Eighteen patients with lumbar spondylolisthesis were adopted in this study. Among them, there were 8 males and 10 females, aged from 43 to 62 years old. Roentgenogram showed that there were 6 cases of I degree spondylolisthesis, 11 cases of II degree and 1 case of III degree. All patients were treated with cages for intervertebral fusion after total laminectomy and pedicle screws for the reduction.


RESULTS
The cases were followed up from 6 to 12 months with an average of 11 months. The clinical results were excellent in 13 cases and good in 5 cases. All patients achieved successful fusion and bony union. There were no pedicle screw loosening or broken or peripheral nerve dysfunction in this series.


CONCLUSIONS
This method has been proved to be an effective and reliable procedure for treatment of lumbar spondylolisthesis. It produces a high fusion rate and clinical success.
Wan
Lun
L
Department of Orthopedic Surgery, Sichuan Provincial People's Hospital, Chengdu, Sichuan, P. R. China 610072.
Qi
Yan
Y
Zhang
Hong-Bing
HB
D000328:Adult; D000497:Alloys; D001863:Bone Screws; D016025:Bone Transplantation; D005260:Female; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal / Q000379:methods*; D006801:Humans; D016268:Internal Fixators; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D013123:Spinal Fusion / Q000379:methods*; D013168:Spondylolisthesis / Q000601:surgery*; D014025:Titanium
D000497:Alloys; D014025:Titanium