Unilateral biportal endoscopic discectomy (UBE) versus percutaneous endoscopic lumbar discectomy (PELD) in the treatment of lumbar disc herniation linked with posterior ring apophysis separation: a retrospective study.

Posterior ring apophysis separation (PRAS) associated with lumbar disc herniation (LDH) is a relatively rare form of disc herniation. This study aims to evaluate the clinical effectiveness of unilateral biportal endoscopic discectomy (UBE) and percutaneous endoscopic lumbar discectomy (PELD) in the treatment of PRAS with LDH.