Objective To investigate the curative effect of allograft bone in posterior spinal fusion for the patients with severe and rigid idiopathic scoliosis.  Methods Thirty patients of idiopathic scoliosis received allograft bone in posterior spinal fusion for correction (experimental group)

while 28 patients received autogenous bone (control group). Their clinical data were collected to analyze the body temperature

erythrocyte sedimentation rate before and after operation

healing of postoperative spinal incision. At 3 and 6 months after operation

foreign body reaction was studied clinically and fusion status was assessed radiographically.  Results No significant foreign body reaction or chronic deep wound infection occurred in all patients. All patients got primary healing in 2 weeks

the new bone formed 3 months later and bone healing appeared radiographically 6 months later.  Conclusion Allograft bone in the posterior spinal fusion for the patients of idiopathic scoliosis is matchable to autogenous bone

and it is safe and avoidance of the deficiency of autogenous bone.