The XEN-21 pedicle Hook is designed to embrace the pedicle of the thoracic vertebra. The 8mm blade width prevents intrusion of the medial margin of the hook blade into the foramen. The 20 degrees blade width prevents intrusion of the medial margin of the hook blade into the foramen. The 20degrees hook-blade angle closely approximates the angle of the thoracic facet joint
The XEN-21 pedicle Hook is designed to embrace the pedicle of the thoracic vertebra. |