Treatment the upper cervical instability caused by posttraumatic with Cervifix system and allogeneic freeze-drying,radiation sterilization bone sheet
【摘要】：正Objective To introduce and evaluate the clinical application of Cervifix internal fixation system and allogeneic freeze-drying,radiation sterilization bone sheet in craniocervical fusion surgery for occipitocervical instability patients.Methods 27 cases of occipitocervical instability caused by injury underwent craniocervical fusion using Cervifix internal fixation system and allogeneic freeze-drying, radiation sterilization bone sheet.All the cases were followed up for 6 to 42 months to evaluate the results of internal fixation,bone fusion and neurological defect recovery. Results All the cases gained a bone fusion within 6 months.The neurological defect recovered to different extents.There were no loosened screws,displacement or breakage. Neither complication of neurological defect nor CSM leakage related to the application of Cervifix system was found.Conclusion The Cervifix internal fixation system has the merit of stable and easy fixation.It is a good alternative in craniocervical fusion surgery. allogeneic freeze-drying,radiation sterilization bone sheet is an ideal material in craniocervical fusion surgery for its good biocompatibility,biomechanical characters and osteogenic ability.