Allograft bone in spinal fusion for adolescent idiopathic scoliosis.
OBJECTIVE
The purpose of this long-term study was to determine the efficacy of allograft bone for spinal fusion for adolescent idiopathic scoliosis. Prior studies comparing allograft and autograft have been short term.


METHODS
This multicenter retrospective study was carried out on 111 patients with 132 total curves fused for adolescent idiopathic scoliosis. Minimum follow-up was 5 years (average 72 months). A variety of segmental instrumentation was used, with most being dual-rod, multiple-hook constructs.


RESULTS
Average preoperative curve was 59 degrees with immediate correction to 29 degrees (51%) and final follow-up of 32.24 degrees (45.4%). Average loss of correction was 3.5 degrees (5.9%). There were three pseudarthroses, one infection, and no rod breakage.


CONCLUSIONS
Pseudarthrosis rate of 2.7% and loss of correction of 5.9% are comparable with or better than those in previous reports using autogenous bone graft and either segmental or nonsegmental instrumentation.
Knapp
D Raymond
DR
Department of Orthopaedics, Nemours Children's Clinic, Orlando, Florida 32806, USA. rknapp@nemours.org
Jones
Eric T
ET
Blanco
John S
JS
Flynn
Joseph C
JC
Price
Charles T
CT
D000293:Adolescent; D016025:Bone Transplantation / Q000379:methods* / Q000706:statistics & numerical data / Q000639:trends; D002648:Child; D003362:Cost-Benefit Analysis; D005260:Female; D006801:Humans; D007239:Infections / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D008297:Male; D011183:Postoperative Complications / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D011542:Pseudarthrosis / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D012086:Reoperation / Q000706:statistics & numerical data; D012189:Retrospective Studies; D012600:Scoliosis / Q000601:surgery*; D013123:Spinal Fusion / Q000379:methods* / Q000706:statistics & numerical data / Q000639:trends; D014184:Transplantation, Homologous / Q000379:methods* / Q000706:statistics & numerical data / Q000639:trends; D016896:Treatment Outcome