Clinical outcomes of uni-portal non-coaxial spinal endoscopic surgery for severe caudally migrated lumbar disc herniation with free fragments
To evaluate the clinical efficacy and perioperative safety of uni-portal non-coaxial spinal endoscopic surgery (UNSES) for the treatment of severe caudally migrated lumbar disc herniation with free fragments. A retrospective study was conducted on 75 consecutive patients with single-level severe caudally mig...