Comparison of the Long-term Efficacy of Simple Interbody Fusion vs .Metal Interbody Fusion in Elderly Patients with Lumbar Intervertebral Disc Protrusion
Abstract：Objective] To compare clinical efficacy of metal interbody fusion and bone graft(Cage) vs .interbody fu‐sion and bone graft for postoperative intervertebral stability of elderly lumbar intervertebral disc protrusion .[Methods]A total of 28 elderly patients with lumbar intervertebral disc protrusion were chosen .After discectomy ,15 patients (19 discs) underwent Cage implementation(group A) ,while 13 patients(17 discs) underwent simple interbody fusion and bone graft(group B) .X‐ray film and CT slice result of patients 1 week ,6 and 24 months after operation were followed up and compared .The change of segmental intervertebral height was measured .The intervertebral stability between two methods was compared .[Results]The maintenance of intervertebral height in group A at 6 months after operation was better than that in group B ,but intervertebral height in group A at 24 months after operation was lower than that in group B .The fusion rate of group B after 2 years(88 .24% ) was higher than that in group A(84 .21% ) ,and there was signifi‐cant difference( P<0 .05) .[Conclusion] The lumbar stability of Cage implantation within 6 months after operation is better than simple interbody fusion and bone graft ,but long‐term efficacy is poorer .
2014, Vol. 31 
