C7 Spinous Process Bone Interbody Fusion Of Mechanical And Clinical Study

ObjectiveComparison of preparation of the carotid 7 (C7) spinous process and iliac bone biomechanical properties, C7 spinous process of autologous bone for cervical interbody fusion feasibility; retrospective analysis of single level cervical spinal cord clamp anterior and a combined surgery C7 spinous process with autologous bone interbody fusion line of the clinical efficacy of treatment.MethodsMechanical testing equipment with the C7 spinous process of the preparation of the iliac bone and the longitudinal compressive load test done, compared with the iliac bone C7 spinous process between the compressive load; Liaocheng People's Hospital were retrospectively analyzed from February 2004 to May 2010 after 37 cases of spinal cord compression have single-stage side clamp CSM patients (male 25, female 12 cases. aged 38-72 years, mean 56.5 years old. preoperative JOA score 6 -13 points, an average of 8.4±2.1 points). All use an anterior cervical spine surgery in the posterior cut during the operation of the C7 spinous process bone as required for anterior interbody fusion of the material. Patients were followed up after surgery, patients were observed and analyzed neurological improvement, neck axial symptoms, height and intervertebral fusion segments interbody fusion and so on.ResultsLongitudinal compressive load test showed that C7 spinous process and iliac bone compression load on the support of the test force - deformation curves of the data was no significant statistical difference. Selected cases, a combined anterior cervical spine surgery time was 2.5 to 4.5 hours, an average of 3.5 hours (from skin incision to close the incision, the operation time between two operations do not include preparation time). Blood loss 260 ~ 580ml, an average of 370ml. 4 cases were lost during surgery 2 units red cell suspension, the rest were not blood transfusion. 2 cases of C5 nerve root palsy, 2 patients had transient hoarseness, no infection, cerebrospinal fluid leak complications. All patients were followed up for at least 1 month, 3 months, 6 months and 12 months. Follow-up JOA score the last 8 - 16 points, an average of 12.5±2.3 points. The average improvement rate of 75%, which were excellent in 9 cases, good in 22 cases, improvement in 6 cases. Initial follow-up, 7 patients had symptoms of axial neck, the last follow-up are gone. No graft collapse and displacement, loosening and fracture without internal fixation, all were bone interbody fusion.ConclusionC7 spinous process and iliac bone in the longitudinal compressive load test when the test force - deformation curves of the data is statistically no significant difference between cervical interbody support to ensure its strength, while conducive to intervertebral fusion. Interbody support and fusion meet the requirements, can substitute for anterior cervical interbody iliac bone fusion material. An anterior cervical decompression and fusion with internal fixation clamp single segment of cervical spinal cord disease is a safe and effective method, which will cut the time of posterior surgery autologous bone C7 spinous process for the former interbody bone fusion of the material has to take simple, relatively little trauma, tissue compatibility, no rejection, fusion rate and the relative advantages of savings in the cost of treatment. C7 spinous process of autologous bone interbody fusion when used as materials in the treatment of cervical spinal cord clamp to provide a new way.