[Pedicle screw implanting in the treatment of multi-level lumbar spine fractures].
OBJECTIVE
To review the clinical data of a group of patients with multi-level lumbar spine fractures treated with TSRH-3D pedicle screw system and to investigate the effect and post-operative efficacy of this technique.


METHODS
Eighteen patients diagnosed as multi-level lumbar spine fracture were treated with TSRH-3D pedicle screw system. The operations were performed at 4 hours to 2 days after injury and the follow-up period was 15-32 months (mean: 23 months). The X-ray and CT scan were taken both preoperatively and postoperatively.


RESULTS
(1) Twelve patients became injured from height falling (67%), 5 from traffic accident (28%) and 1 from crush (5%). (2) The improvement rate of spine motion, back pain and lower extremity pain was 67%, 94% and 78% respectively. (3) Compared with preoperative status, the height of anterior border of vertebra improved by 59.2%, lost by an average of 5.2% (P < 0.01) and the Cobb angle was corrected by 19.5 degrees , lost an average of 5.4 degrees .


CONCLUSIONS
It is feasible to treat the multi-level lumbar spine fractures with TSRH-3D pedicle screw system. And the outcome of reduction and fixation is satisfactory. This technique is excellent at improving the height of injury vertebra, physiological curvature and neural function. It also can relieve lumbocrural pain with a definite postoperative efficacy.
Wang
Shou-guo
SG
Department of Orthopedics, First Hospital of Nanjing Medical University, Huai'an 223000, China.
Xie
Yue
Y
Ji
Feng
F
Fei
Hao-dong
HD
Zhao
Qing-hua
QH
Xu
Yong-yi
YY
Tian
Ji-wei
JW
D000328:Adult; D000368:Aged; D001863:Bone Screws; D005260:Female; D005593:Fracture Fixation, Internal / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D016268:Internal Fixators; D008159:Lumbar Vertebrae; D008297:Male; D008875:Middle Aged; D016103:Spinal Fractures / Q000601:surgery*