Centerpiece plate vs. Arch plate fixation in cervical unilateral open-door laminoplasty: a retrospective comparative study

Both Centerpiece plate and Arch plate fixation can improve the patient's symptoms. Centerpiece plate fixation has a worse prognosis than Arch plate fixation in cervical unilateral open-door laminoplasty because the ventral prong in the Centerpiece plate may obstruct the spinal cord's backward movement.