Study On Biomechanical Analysis And Clinical Application Of Improved Fusion Cage

Objective:To design and make a new type of intervertebral fusion cage and provide a reliable fixative instrument and operative procedure. Method:The patients were randomized divided into two groups, observation group (36 patients) and control group (35 patients). In the observation group, improved intervertebral fusion cages were grafted. Traditional bone grafting was adopted in the control group. Biomechanical analysis of the improved intervertebral fusion cage was conducted. Result:28 patients in the observation group and 12 patients in the control group resumed their work. Because the injured nerve did not recovered, the others did not return to their former work. Statistical analysis showed significant differences (P<0.001) between the two groups in such aspects as surgical time, blood loss, bed stay, postoperative pain in bone removal area and nerve recovery (JOA score). Conclusion:Digital technique was used in the fusion cage. With the specific instrument, the surgical procedure was made routinization. In the course of grafting, postero-lateral cortex of bone was removed quantitatively. The intervertebral fusion cage was prevented from moving towards vertebral canal. With double even redouble loading on the fusion cage than on neck, more than 100,000 times of fatigue test showed that the fusion cage was better than the similar products of foreign countries.