Juichi Tonosu1, Yasushi Oshima2, Ryutaro Shiboi3, Akihiko Hayashi3, Yuichi Takano3, Hirohiko Inanami3, Hisashi Koga3. 1. Department of Orthopaedics, Iwai Orthopaedic Medical Hospital, Tokyo, Japan;; Department of Orthopaedic Surgery, Inanami Spine and Joint Hospital, Tokyo, Japan;; Department of Orthopaedic Surgery, The University of Tokyo, Tokyo, Japan;; Department of Orthopaedic Surgery, Kanto Rosai Hospital, Kawasaki, Kanagawa, Japan. 2. Department of Orthopaedics, Iwai Orthopaedic Medical Hospital, Tokyo, Japan;; Department of Orthopaedic Surgery, Inanami Spine and Joint Hospital, Tokyo, Japan;; Department of Orthopaedic Surgery, The University of Tokyo, Tokyo, Japan. 3. Department of Orthopaedics, Iwai Orthopaedic Medical Hospital, Tokyo, Japan;; Department of Orthopaedic Surgery, Inanami Spine and Joint Hospital, Tokyo, Japan.
Abstract
BACKGROUND: Percutaneous endoscopic lumbar discectomy (PELD) is one of the less invasive treatments of lumbar disc herniation (LDH), and has three different operative approaches. This study focused on the interlaminar approach (ILA) and investigated the appropriate operative route for this approach. METHODS: ILA was performed in 41 patients with LDH. The width of the interlaminar space, LDH size, and positional relation between LDH and the corresponding nerve root were radiologically evaluated. Thirty-three LDHs were removed via the shoulder of the corresponding nerve root and eight were removed via the axilla of the corresponding nerve root and dural sac. Pre- and postoperative status were evaluated using the modified Japanese Orthopedic Association (mJOA) and numerical rating scale (NRS) scores. RESULTS: The mean age was 41.5 years; there was single-level involvement, mostly at L5/S1 (33 cases). The mean recovery rate of mJOA score was 59.8% and mean pre- and postoperative NRS scores were 5.8 and 0.98, respectively. Relatively severe complications developed in three patients treated by ILA via the shoulder. There was persistent numbness in the corresponding nerve area, transient muscular weakness, and transient bladder and rectal disturbance, may be due to excessive compression of the nerve root and/or dural sac by the endoscopic sheath. CONCLUSIONS: ILA can be used to treat LDH revealing an interlaminar space of ≥20 mm. The procedure is minimally invasive and effective; however, appropriate selection of an operative route is important to avoid operative complications. Particularly for large LDH, the operative route via the axilla should be considered.
BACKGROUND: Percutaneous endoscopic lumbar discectomy (PELD) is one of the less invasive treatments of lumbar disc herniation (LDH), and has three different operative approaches. This study focused on the interlaminar approach (ILA) and investigated the appropriate operative route for this approach. METHODS: ILA was performed in 41 patients with LDH. The width of the interlaminar space, LDH size, and positional relation between LDH and the corresponding nerve root were radiologically evaluated. Thirty-three LDHs were removed via the shoulder of the corresponding nerve root and eight were removed via the axilla of the corresponding nerve root and dural sac. Pre- and postoperative status were evaluated using the modified Japanese Orthopedic Association (mJOA) and numerical rating scale (NRS) scores. RESULTS: The mean age was 41.5 years; there was single-level involvement, mostly at L5/S1 (33 cases). The mean recovery rate of mJOA score was 59.8% and mean pre- and postoperative NRS scores were 5.8 and 0.98, respectively. Relatively severe complications developed in three patients treated by ILA via the shoulder. There was persistent numbness in the corresponding nerve area, transient muscular weakness, and transient bladder and rectal disturbance, may be due to excessive compression of the nerve root and/or dural sac by the endoscopic sheath. CONCLUSIONS: ILA can be used to treat LDH revealing an interlaminar space of ≥20 mm. The procedure is minimally invasive and effective; however, appropriate selection of an operative route is important to avoid operative complications. Particularly for large LDH, the operative route via the axilla should be considered.
Authors: Kyung-Chul Choi; June-Ho Lee; Jin-Sung Kim; Luigi Andrew Sabal; Sol Lee; Ho Kim; Sang-Ho Lee Journal: Neurosurgery Date: 2015-04 Impact factor: 4.654
Authors: Altay Sencer; Ali Guven Yorukoglu; Mehmet Osman Akcakaya; Yavuz Aras; Aydin Aydoseli; Osman Boyali; Fahir Sencan; Pulat Akin Sabanci; Cengiz Gomleksiz; Murat Imer; Talat Kiris; Kemal Hepgul; Omer Faruk Unal; Nail Izgi; Ali Tuncay Canbolat Journal: World Neurosurg Date: 2014-06-04 Impact factor: 2.104