The Use of Cervical Lateral Mass Plate and Screw for the Treatment of Fracture and Dislocation of the Lower Cervical Spine

ObjectiveThe cervical lateral mass plate and screw were used for the treatment of fracture and dislocation of the lower cervical spine. Methods14 cases of lower cervical spine injury were treated by this technique. There were 3 unilateral and 4 bilateral fracture and dislocations. One case of bilateral dislocations were associated with vertebral body fracture. 3 cases were neurologically intact. 5 were complicated with single or multiple nerve root injuries. 2 had complete and 4 in complete spinal cord injury. The screws and plates were placed on the lateral mass of cervical vertebrae by using Roy-Camille, and Margel or A techniques. Lamina or facet bone grafting was performed to achieve a long-term stability. ResultsThe follow-up period ranged from 8～40 months(mean 28 months). All the cases had solid fusion based on flexion and extension radiographs at an average of 3.65 months. Patients were encouraged to sit up wearing soft collar 2 weeks after the surgery. There were no neurovascular complications during the operation. The cases of sustained nerve root injury were fully recovered at the time of follow-up. Patients with incomplete on nerve root functions and one frankel level improvement. ConclusionThis technique has the advantages of short segment fixation, strong stability,light external post-operative support and allowing early mobilization.