The Comparative Study Of The Clinical Curative Effect About Three Kinds Of Fusion Materials In Interbody Fusion

Objective:To investigate the long-term effects of autogenous bone,xenoma bone and cages and complications of lumbar interbody fusion.Methods:From 2008 to 2010,75 cases of 132 segments including lumbar disc protrusion, Lumbar spinal stenosis and lumbar spondylolisthesiswere followed up after underwent interbody lumbar fusion.The contents followed up Included (1) Clinical outcome evaluation pre-and postoperative JOA score and Oswestry Disability Questionnaire were used to determine the long-term effect of the operation. (2) Radiological studies:The average preoperative and postoperative disc space height, foraminal height, lumbar lordosis, segmental lordosis and the amount of sagittal rotation observed between the extremes of movement(on flexion-extension radiographs)were measured and compared, Results:All cases were followed and the follow-up period ranged from 7 to 24 months with an average of 16 months.The fusion rate of autogenous bone is 93.2%, The fusion rate of xenoma bone is 91.8%and cages is 92.3%. No statistically significant differences between and among three groups of cases, postoperative vertebral clearance and the intervertebral foramen and were highly improved both will be markedly, but the difference between three groups of cases is not significant (P>0.05), the final follow-up vertebra gap, intervertebral foramen height in different degree reducing, autogeneous bone fusion group have the largest reduction with allograft group and fusion device group, but allograft fusion group index and fusion device is not significant differences between groups. Three groups of cases of fusion segmental lordosis Angle and lumbar lordosis Angle in before and after operation and the end time follow-up is not significant. vertebral bodies activities domain between flexor hyperextension bits and pieces after surgery was decreased, but in the end time follow-up, three groups between vertebral bodies activities domain has not seen the obvious difference. Curative effect evaluation results recovery rate (JOA) for 95.6%, ODI relatively preoperative also improved obviously. But in the end time follow-up, partial cases fixation loose lead to internal fixation failure cause vertebral gap height again missing, at the same time appear neurologic symptoms. Group in the sink is not seen fusion and shifting. Conclusion:in long-term follow-up, autogeneous bone, allograft and fusion sensor fusion rate have no obvious difference, compared between vertebral bodies fusion device can has vertebral bodies fusion mechanical role, and also has biologically fusion role. It can maintain reset after the operation state, and also can improve the lumbosacral section physiological radian and recovery of vertebral gap height. But just how to select the fusion materials based on case, just can maintain the vertebral gap height is not enough, even integrated consideration symptoms in patients, the economic condition and even the technical level of the performer for other factors, so choose to use a fusion materials is according to the performer and the patient's own particular case and choose relatively appropriate fusion materials to achieve ideal fusion effect.