No abstract

This is the first reported series of PD patients undergoing posterior spinal fusion from T2 to the sacrum for major deformities. This study indicates that good correction of sagittal and frontal balance enables good clinical and radiologic results that remain stable over time even when complications occur.

Relevance of posture assessment has been reported in case of spine disorders. This study explores the interest in quantifying posture using 3D reconstruction from biplanar X-rays in free standing position and a force plate. 93 patients consulting for spine disorders were divided ('3D deformity', 'sagittal imbalance' and 'mild deformity') and compared with 23 asymptomatic volunteers. Registration of the gravity line (GL) in reconstruction yielded transversal position of the center of acoustic meati (CAM) T1, T4, T9, L3, S1 and hip axis (HA) with regard to GL. Transversal position of CAM and L3 appeared as relevant parameters to discriminate patients from volunteers. Sagittal inclination of the axis linking the CAM to HA was correlated with position of the CAM to GL (r = 0.92 for patients). In conclusion, observing posture in 3D with regard to GL provides clinical relevant information. CAM-HA inclination may improve postural evaluation without force plate.

The preoperative planning enables the surgeon to estimate the clinical effects of the different surgical techniques in order to choose the best procedure for a given patient.

Complete vertebrectomy and spinal shortening can be used in the acute phase to manage thoracic spine fracture-dislocations.