As a result, cerical lateral mass screws are generally smaller in length and diameter with starting points, which are medially aligned relatie to thoracic pedicle screws. 因此，頸椎側塊螺釘與胸椎椎弓根螺釘相比，長度和直徑較小，進釘點要更向中間靠近。
The cervicothoracic junction is a transitional area where the cervical spine lateral masses decrease in size and the vertebral pedicles increase in size within the thoracic region. 後路釘棒裝置系統與前路裝置相比，由於使用了牢固的側塊螺釘或椎弓根螺釘，以及在正中矢狀面上有更長的固定距離，因此可以提供更好的生物力學穩定性。
