{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,21]],"date-time":"2026-02-21T04:33:38Z","timestamp":1771648418403,"version":"3.50.1"},"reference-count":21,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,5]]},"abstract":"<jats:sec><jats:title>OBJECTIVE<\/jats:title><jats:p>Lumbar spinal canal stenosis (LSS) and knee osteoarthritis (KOA), both of which are age-related degenerative diseases, are independently correlated with increased pain and dysfunction of the lower extremities. However, there have been few studies that investigated whether LSS patients with KOA exhibit poor clinical recovery following lumbar spinal surgery. The aim of this study was to elucidate the surgical outcomes of lumbar spinal surgery for LSS patients with KOA using multiple health-related quality of life (HRQOL) parameters.<\/jats:p><\/jats:sec><jats:sec><jats:title>METHODS<\/jats:title><jats:p>A total of 865 consecutive patients who underwent posterior lumbar spinal surgery for LSS were retrospectively reviewed. Baseline characteristics, radiographic parameters, perioperative factors, and multiple HRQOL parameters were analyzed preoperatively and at 1-year follow-up. HRQOL items included the Zurich Claudication Questionnaire, Oswestry Disability Index, Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36), and Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ). The effectiveness of surgical treatment was assessed using the JOABPEQ. The treatment was regarded as effective when it resulted in an increase in postoperative JOABPEQ score by \u2265 20 points compared with preoperative score or achievement of a postoperative score of \u2265 90 points in those with a preoperative score of &lt; 90 points.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>A total of 32 LSS patients with KOA were identified, and 128 age- and sex-matched LSS patients without KOA were selected as controls. In both groups, all HRQOL parameters markedly improved at the 1-year follow-up. On the SF-36, the postoperative mean score for the role physical domain was significantly lower in the KOA group than in the control group (p = 0.034). The treatment was significantly less \u201ceffective\u201d in the social life domain of JOABPEQ in the KOA group than in the control group (p &lt; 0.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSIONS<\/jats:title><jats:p>The surgical outcomes of LSS patients with KOA are favorable, although poorer than those of LSS patients without KOA, particularly in terms of social life and activities. These results indicate that LSS patients with KOA experience difficulty in routine work or ordinary activities due to knee pain or restricted knee ROM even after lumbar spinal surgery. Hence, preoperative KOA status warrants consideration when planning lumbar spinal surgery and estimating surgical outcomes of LSS.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2019.10.spine19886","type":"journal-article","created":{"date-parts":[[2019,12,27]],"date-time":"2019-12-27T22:57:51Z","timestamp":1577487471000},"page":"710-715","source":"Crossref","is-referenced-by-count":10,"title":["Impact of knee osteoarthritis on surgical outcomes of lumbar spinal canal stenosis"],"prefix":"10.3171","volume":"32","author":[{"given":"Masahiro","family":"Ozaki","sequence":"first","affiliation":[{"name":"Keiyu Orthopedic Hospital, Gunma;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nobuyuki","family":"Fujita","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo;"},{"name":"Department of Orthopaedic Surgery, Fujita Health University, Aichi;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Azusa","family":"Miyamoto","sequence":"additional","affiliation":[{"name":"Keiyu Orthopedic Hospital, Gunma;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Satoshi","family":"Suzuki","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Osahiko","family":"Tsuji","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Narihito","family":"Nagoshi","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eijiro","family":"Okada","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mitsuru","family":"Yagi","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takashi","family":"Tsuji","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Tokyo Medical Center, Tokyo; and"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masaya","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Morio","family":"Matsumoto","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hitoshi","family":"Kono","sequence":"additional","affiliation":[{"name":"Keiyu Orthopedic Hospital, Gunma;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kota","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo;"},{"name":"Keio Spine Research Group (KSRG), Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"b1","series-title":"J Rheumatol","first-page":"1565","article-title":"Risk factors for progression to new sites of radiographically defined osteoarthritis in women","volume":"23","author":"Cerhan JR","year":"1996","unstructured":"Cerhan JR, Wallace RB, el-Khoury GY, Moore TE: Risk factors for progression to new sites of radiographically defined osteoarthritis in women. 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