Anterior Surgery For Hyperextension Injury Of The Cervical Spinal Cord In The Decreased Storing Space Of Spinal Canal

Objective:To study the injury character of hyperextension injuries of cervical spinal cord and treatment effect of anterior surgery.Methods:From November 2000 to July 2009,30 cases with hyperextension injuries of cervical spinal cord were treated in the Second Affiliated Hospital of Dalian Medical University. All the cases were with the decreased storing space of spinal canal in MRI, in which all the cases had cervical spinal cord herniation,including cervical spinal stenosis in 27cases.25cases with pressure in the disc level were performed anterior cervical discectomy and with iliac bony fusion or titanium net bony fusion or cage fusion and internal fixation.27 patients with cervical spinal stenosis were treated with anterior cervical subtotal corpectomy using titanium mesh and locking plate.To follow up all the postoperative cases,neural function and clinical symptoms imporoved and bony fusion was recorded.According to JOA score,preoperative score and postoperative follow up score were compared,improvement rates were caleulated respectivelyResults:49 cases were followed up after operation,3 cases were lost. Time of follow-up ranged from 6～24 months(the average was 10 months). The JOA of before operation was(8.55±1.52),the JOA in a half year after operation was(12.87±1.68),T test was used to compare preoperative and follow up JOA scores.The statistical results were significantly different (P<0.001,α=0.05).The improvement rate of postoperative was(56.37±5.58)%.The bony fusion occurred in a half year by x-ray inspectionConclusion:For hyperextension injury of the cervical spinal cord in the decreased Storing Space of Spinal Canal patients,anterior cervical decompression and bone graft and internal fixation is a good choice.