Cervical Pedicle Screw Fixation Combined with Laminoplasty for Cervical Spondylotic Myelopathy with Instability
Cervical spondylotic myelopathy in a 76-year-old man with instability (case 12). Preoperative radiographs showed percentages of slip of 18%, 0%, and 0% in flexion, and the neutral and extension positions, respectively; the slip angles were -11°, -1°, and 6°, respectively. Preoperative magnetic resonance imaging indicated spinal cord compression and signal change at the C4/5 level (). Postoperative radiographs indicated accurate penetration of the screws with good positioning. Cervical spinal alignment was good. The percentage of slip was corrected to 0%. The range of motion of the cervical spine at C2-7 improved from 39° to 7°. There were no neurovascular complications. JOA score in the patient improved from 7.5 to 12 points 1 year after surgery (). Postoperative computed tomography shows that pedicle screws were inserted bilaterally into C3 and C5. Bilateral C3 and C5 pedicle screws were accurately inserted into the pedicles (). Operative photo was shown in .