Evaluation of thoracic pedicle screw placement in adolescent idiopathic scoliosis Sarlak AY et al. - This CT-based study demonstrated that T4–T9 concave segments have a smaller safe zone with respect to both cord-aorta injury in medial and lateral malpositions. In these segments, screws should be accurate and screw malposition is to be unacceptable. [more...]
