Unilateral biportal endoscopic cervical laminectomy with bilateral foraminotomy for cervical myeloradiculopathy: clinical and radiological outcomes at 1 year.

Spinal canal cross-sectional area increased from 94.31 ± 18.02 to 166.65 ± 24.31 mm2 (p < 0.001).

Facet length and facet cross-sectional area significantly decreased after bilateral posterior cervical foraminotomy, with more facet joint resection observed on the right side compared to the left.

C2/C7 lordosis slightly increased postoperatively without kyphotic change, and no patient demonstrated postoperative cervical instability at 1-year follow-up.