{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,26]],"date-time":"2026-10-26T21:37:36Z","timestamp":1793050656552,"version":"4.5.0"},"reference-count":20,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2014,1,29]],"date-time":"2014-01-29T00:00:00Z","timestamp":1390953600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2014,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To compare the outcomes of diffuse pigmented villonodular synovitis (PVNS) of the knee treated with routine anteroposterior open surgery or modified multi\u2010directional arthroscopy.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Medical records of patients with diffuse PVNS who underwent surgery between 2002 and 2010 were reviewed. Patients were followed up at 3, 6, 12, 24, and 36\u00a0months. Operative time, blood loss, length of hospital stay, recurrence rate, and International Knee Documentation Committee (IKDC) scores and Lysholm knee scores at 1\u2010 and 3\u2010year postoperatively were compared between the open surgery and arthroscopy groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 41 patients with diffuse PVNS were included (20\u00a0in open surgery group and 21\u00a0in multi\u2010directional arthroscopy group). There was no significant difference in the baseline characteristics between the two groups. Operation time, postoperative bleeding, and length of hospital stay were all significantly lower in the arthroscopy group than in the open surgery group (all, <jats:italic>P<\/jats:italic> &lt; 0.05). There were four recurrences in the open surgery group and one in arthroscopy group. All five recurrences received a second surgery without any subsequent recurrences. At both 1\u2010 and 3\u2010year postoperatively, IKDC and Lysholm scores were significantly greater in the arthroscopy group than the open surgery group (all <jats:italic>P<\/jats:italic> &lt; 0.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The multi\u2010directional arthroscopic technique was associated with significantly shorter operation time and hospital stay, less blood loss, and better postoperative IKDC and Lysholm scores than open surgery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Retrospective study with controls, Level III.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-014-2852-5","type":"journal-article","created":{"date-parts":[[2014,1,28]],"date-time":"2014-01-28T04:55:38Z","timestamp":1390884938000},"page":"2830-2836","source":"Crossref","is-referenced-by-count":41,"title":["A comparison of open and arthroscopic surgery for treatment of diffuse pigmented villonodular synovitis of the knee"],"prefix":"10.1002","volume":"22","author":[{"given":"Hai\u2010feng","family":"Gu","sequence":"first","affiliation":[{"name":"Department of Orthopedics Zhejiang Provincial People's Hospital No.158 Shangtang Road 310014 Hangzhou Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shui\u2010jun","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Orthopedics Zhejiang Provincial People's Hospital No.158 Shangtang Road 310014 Hangzhou Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chen","family":"Zhao","sequence":"additional","affiliation":[{"name":"Department of Orthopedics Zhejiang Provincial People's Hospital No.158 Shangtang Road 310014 Hangzhou Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Orthopedics Zhejiang Provincial People's Hospital No.158 Shangtang Road 310014 Hangzhou Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qing","family":"Bi","sequence":"additional","affiliation":[{"name":"Department of Orthopedics Zhejiang Provincial People's Hospital No.158 Shangtang Road 310014 Hangzhou Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,1,29]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.3944\/AOTT.2011.2442"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11999\u2010012\u20102288\u20105"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11999\u2010012\u20102589\u20108"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2012.02.007"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.autrev.2010.07.001"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00266321"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1055\/s\u20100030\u20101247756"},{"key":"e_1_2_7_9_1","first-page":"1467","article-title":"Arthroscopic treatment of localized and diffuse pigmented villonodular synovitis of the knee","volume":"34","author":"Kubat O","year":"2010","journal-title":"Coll 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