Biomechanical study and digital modeling of traction resistance in posterior thoracic implants.

Study Design: Posterior implants were used to test the resistance of seven human thoracic spines to traction, and results were compared with those of a digital study.

Objectives: To compare the use of hook and screw fixation methods for posterior thoracic surgery in a study supplemented by a digital analysis using the finite-element method.

Summary Of Background Data: The maximum break strength of pedicular screws on bone has already been studied several times.