{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,12,6]],"date-time":"2024-12-06T13:40:08Z","timestamp":1733492408040,"version":"3.30.1"},"reference-count":32,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,7,1]]},"abstract":"<jats:sec>\n<jats:title>OBJECTIVE<\/jats:title>\n<jats:p>In this study, the authors aimed to determine the mid- to long-term outcomes of microendoscopic laminotomy (MEL) for lumbar spinal stenosis (LSS) with degenerative spondylolisthesis (DS) and identify preoperative predictors of poor mid- to long-term outcomes.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title>METHODS<\/jats:title>\n<jats:p>The authors retrospectively reviewed the medical records of 274 patients who underwent spinal MEL for symptomatic LSS. The minimum postoperative follow-up duration was 5 years. Patients were classified into two groups according to DS: those with DS (the DS+ group) and those without DS (the DS\u2212 group). The patients were subjected to propensity score matching based on sex, age, BMI, surgical segments, and preoperative leg pain visual analog scale scores. Clinical outcomes were evaluated 1 year and &gt; 5 years after surgery.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title>RESULTS<\/jats:title>\n<jats:p>Surgical outcomes of MEL for LSS were not significantly different between the DS+ and DS\u2212 groups at the final follow-up (mean 7.8 years) in terms of Oswestry Disability Index (p = 0.498), satisfaction (p = 0.913), and reoperation rate (p = 0.154). In the multivariate analysis, female sex (standard \u03b2 \u22120.260), patients with slip angle &gt; 5\u00b0 in the forward bending position (standard \u03b2 \u22120.313), and those with dynamic progression of Meyerding grade (standard \u03b2 \u22120.325) were at a high risk of poor long-term outcomes.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title>CONCLUSIONS<\/jats:title>\n<jats:p>MEL may have good long-term results in patients with DS without dynamic instability. Women with dynamic instability may require additional fusion surgery in approximately 25% of cases for a period of \u2265 5 years.<\/jats:p>\n<\/jats:sec>","DOI":"10.3171\/2024.2.spine231075","type":"journal-article","created":{"date-parts":[[2024,4,27]],"date-time":"2024-04-27T01:53:20Z","timestamp":1714182800000},"page":"9-16","source":"Crossref","is-referenced-by-count":0,"title":["Long-term efficacy of microendoscopic laminotomy for lumbar spinal stenosis in advanced degenerative spondylolisthesis with or without dynamic spinal instability: a propensity score\u2013matching analysis"],"prefix":"10.3171","volume":"41","author":[{"given":"Shizumasa","family":"Murata","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, Shingu Municipal Medical Center, Wakayama;"},{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keiji","family":"Nagata","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroshi","family":"Iwasaki","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroshi","family":"Hashizume","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akihito","family":"Minamide","sequence":"additional","affiliation":[{"name":"Spine Center, Dokkyo Medical University Nikko Medical Center, Nikko City, Tochigi;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yukihiro","family":"Nakagawa","sequence":"additional","affiliation":[{"name":"Spine Care Center, Wakayama Medical University Kihoku Hospital, Katsuragi-cho, Ito-gun, Wakayama; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shunji","family":"Tsutsui","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masanari","family":"Takami","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuyu","family":"Ishimoto","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masatoshi","family":"Teraguchi","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroki","family":"Iwahashi","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Shingu Municipal Medical Center, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kimihide","family":"Murakami","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryo","family":"Taiji","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takuhei","family":"Kozaki","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoji","family":"Kitano","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Shingu Municipal Medical Center, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Munehito","family":"Yoshida","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Sumiya Orthopaedic Hospital, Wakayama, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroshi","family":"Yamada","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Wakayama Medical University, Wakayama;"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"issue":"384","key":"b1","series-title":"Clin Orthop Relat Res","first-page":"3","article-title":"A radicular syndrome from developmental narrowing of the lumbar vertebral canal. 1954","author":"Verbiest H","year":"2001","unstructured":"Verbiest H. 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