CLINICAL SIGNIFICANCE OF THORACIC PEDICLE CLASSIFICATION BY INNER CORTICAL WIDTH OF PEDICLES ON CT IMAGES IN POSTERIOR VERTEBRAL COLUMN RESECTION FOR TREATMENT OF RIGID AND SEVERE SPINAL DEFORMITIES
Objective To investigate the clinical significances of the thoracic pedicle classification determined by inner cortical width of pedicle in posterior vertebral column resection(PVCR) with free hand technique for the treatment of rigid and severe spinal deformities.Methods Between October 2004 and July 2010,56 patients with rigid and severe spinal deformities underwent PVCR.A total of 1 098 screws were inserted into thoracic pedicles at T2-12.The inner cortical width of the thoracic pedicle was measured and ...