Anatomic Measurement And Clinical Significance Of The Middle And Lower Thoracic Segments In Normal Adults

Thoracic disc herniation (TDH)has high technical difficulty and serious complications, and the clinical anatomy of thoracic intervertebral foramen is less. Collecting 10 adult male cadavers, measuring the longitudinal diameter of the dorsal root ganglion (D-1), the transverse diameter of the dorsal root ganglion (D-2), horizontal sagittal diameter of the upper edge of the intervertebral disc (S-1), the high of intervertebral foramen (H-1), the height of articulationes costovertebrales (H-2), the height of intervertebral disk (H-3), the angel of the dorsal root ganglion (a). The aim of this study is to explore the safe area of middle and lower thoracic section and provide anatomical basis for the selection of operative cannula. Mastering the certain rules of the anatomical structure of the middle and lower thoracic segments, and referring to the above parameters in clinical, is conducive to the selection of the working casing during surgery.