Internal Fixation Of Posterior Approach Radix Arcus Vertebrae Screw Treat Anterior Hyperextension Brace's Fracture

[Objective] To evaluate the outcome of thoracolumbar fracture with spinal cord injury treated with short segment pedicle instrumentation.[Method] 54 cases of thoracolumbar fracture with spinal cord injury from 1999 to 2004 in our department were collected,all of them were treated with short segment pedicle instrumentation.The radiologic , neurologic , and functional outcome were assessed.[Result] All of the 54 cases were followed up,the mean follow up were 13.7months(6-24 months),the average of vertebral anterior and posterior height were corrected from 43.6%,71.4% to 92.2%,96.4%;and 88.3%,93.1% at the last follow up separately.The Cobb's angle were corrected from 23.5°to 4.3°,and 8.8°at the last follow up.62.8% of the vertebral canal was occupied pre operation,and 11.4% post operation,6.2% at last follow up.There was significant deference in targets between pre operation and post operation (P<0.05) , and no significant deference between last follow up and post operation (P>0.05) .Neurologic status improved at least 1 Frankel grade in the patients who had preoperative incomplete paraplegia.61.7% of patients returned to work.[Conclusion] Short segment pedicle instrumentation can provide good reduction,strong fixation,complete decompression and fusion.The treatment outcome is good.Moreover,it is a less traumatic,simple and safe technique.