alexa Microendoscopic Posterior Decompression for the Treatment of Lumbar Lateral Recess Stenosis
ISSN: 2165-7939

Journal of Spine
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Research Article

Microendoscopic Posterior Decompression for the Treatment of Lumbar Lateral Recess Stenosis

Akihiko Hayashi1,2, Yasushi Oshima1,2,3, Ryutaro Shiboi1,2, Satoshi Baba1,2,3, Yuichi Takano1,2, Hirohiko Inanami1,2 and Hisashi Koga1,2*

1Department of Orthopaedics, Iwai Orthopaedic Medical Hospital, 8-17-2 Minamikoiwa Edogawa-ku, Tokyo 133-0056, Japan

2Department of Orthopaedic Surgery, Inanami Spine and Joint Hospital, 3-17-5 Higashishinagawa Shinagawa-ku, Tokyo 140-0002, Japan

3Department of Orthopaedic Surgery, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku Tokyo 113-8655, Japan

Corresponding Author:
Hisashi Koga
Department of Orthopaedics, Iwai
Orthopaedic Medical Hospital 8-17-2 Minamikoiwa
Edogawa-ku Tokyo 133-0056, Japan
Tel: +81-5694-6211
Fax: +81-3658-2114
E-mail: [email protected]

Received date: June 15, 2016; Accepted date: July 01, 2016; Published date: July 04, 2016

Citation: Hayashi A, Oshima Y, Shiboi R, Baba S, Takano Y, et al. (2016) Microendoscopic Posterior Decompression for the Treatment of Lumbar Lateral Recess Stenosis. J Spine 5:317. doi:10.4172/2165- 7939.1000317

Copyright: © 2016 Hayashi A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Lateral recess stenosis (LRS) is a characteristic type of lumbar spinal canal stenosis, with symptoms of nerve root compression. The most common etiology is hypertrophy of the superior articular process. Conventional laminectomy and medial facetectomy are commonly used to treat LRS. This study investigated microendoscopic posterior decompression for the treatment of LRS. Microendoscopic decompression was performed on 28 patients. Computed tomography and magnetic resonance imaging were used to calculate the lateral recess angle and depth. A 16 mm diameter tubular retractor and endoscopic system were used. Unilateral paramedian approaches were performed in all patients. Even using a unilateral paramedian approach, both sides of the nerve roots were decompressed in patients with bilateral radiculopathy. Preand postoperative status was evaluated using the visual analogue scale (VAS). Patient’s mean age was 62.9 years; there was single-level involvement, mostly at L4-5 (85.7%). Intraoperative findings revealed that the most common cause of nerve root compression was hypertrophy of the superior articular process and ligamentum flavum. VAS score improved in all patients following posterior decompression. Pre- and postoperative mean VAS scores were 6.5 and 1.1, respectively (P value < 0.01). No intra- or postoperative complications were observed during a mean follow-up of 10.5 months.

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