9-YEAR MEAN FOLLOW-UP OF ONE-STAGE ANTEROPOSTERIOR EXCISION OF HEMIVERTEBRAE IN THE LUMBOSACRAL SPINE

Six patients with lumbosacral hemivertebrae were treated by one-stage anterior and posterior excision of the hemivertebrae. Long-term follow -up is reported. Overall, correction of the lumbosacral curve was 46% including one case of pseudarthrosis and subsequent loss of correction . More importantly, truncal imbalance was restored unless other congen ital thoracic anomalies were present. New methods of calculating rib c age shift on the pelvis as well as vertebral column displacement from the sagittal plane are presented.