title: Microendoscopic partial resection of the sacral ala to relieve extraforaminal entrapment of the L-5 spinal nerve at the lumbosacral tunnel. Technical note.
abstract: The authors report the cases of three patients with L-5 radiculopathy caused by extraforaminal entrapment of the L-5 spinal nerve at the lumbosacral tunnel; this structure comprises the lumbosacral ligament, the sacral ala, and the L-5 and S-1 vertebral bodies. All three patients suffered severe leg pain and neurological deficits compatible with L-5 radiculopathy. Decompressive surgery involved the microendoscopic partial resection of the sacral ala along the L-5 spinal nerve. All patients experienced immediate pain relief postoperatively. Microendoscopic partial resection of the sacral ala is an effective and minimally invasive surgical option for patients with extraforaminal entrapment of the L-5 spinal nerve.
authors.affiliation: Department of Musculoskeletal Reconstruction and Regeneration Surgery, School of Medicine, Keio University, Tokyo, Japan. morio@sc.itc.keio.ac.jp
authors.forename: Morio
authors.initials: M
authors.lastname: Matsumoto
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Chiba
authors.forename: Ken
authors.initials: K
authors.lastname: Ishii
authors.forename: Kota
authors.initials: K
authors.lastname: Watanabe
authors.forename: Masaya
authors.initials: M
authors.lastname: Nakamura
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Toyama
mesh_terms: D000368:Aged; D019299:Decompression, Surgical; D004724:Endoscopy; D006801:Humans; D008161:Lumbosacral Region; D008297:Male; D009408:Nerve Compression Syndromes / Q000000981:diagnostic imaging / Q000601:surgery*; D011843:Radiculopathy / Q000000981:diagnostic imaging / Q000601:surgery*; D011859:Radiography; D013127:Spinal Nerves / Q000000981:diagnostic imaging / Q000601:surgery*