Pedicle screw fixation in the thoracic spine has become an accepted treatment of spinal disorders, but the safety of its application in the midthoracic spine [T4, T71 is still uncertain.

• 摘要尽管胸椎椎弓根螺钉固定现在已广泛地应用于脊柱外科，但应用在中段胸椎[T4，T7]时的安全性已引起关注。