{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T11:53:46Z","timestamp":1793274826603,"version":"4.5.0"},"reference-count":24,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2000,10,1]],"date-time":"2000-10-01T00:00:00Z","timestamp":970358400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2000,10,1]],"date-time":"2000-10-01T00:00:00Z","timestamp":970358400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthroscopy"],"published-print":{"date-parts":[[2000,10]]},"abstract":"<jats:title>Summary:<\/jats:title>\n                  <jats:p>An unusual case of localized pigmented villonodular synovitis of the ankle as a rare cause of chronic anterolateral ankle pain in a 16\u2010year\u2010old horsewoman is presented. Intra\u2010articular nodular forms of pigmented villonodular synovitis can only be diagnosed arthroscopically, macroscopic and microscopic aspects being typical. We believe that this lesion is more likely a reactive process secondary to repetitive microtrauma rather than a true neoplasm. Our patient presented with pathology in the left ankle, the side by which one mounts and dismounts a horse, forcing, in both activities, ankle dorsiflexion. Moreover, an English saddle was used by our patient, upon which one rides with the ankle maintained in dorsiflexion. At arthroscopy, the soft\u2010tissue mass was seen to be entrapped in the joint between the talus and the tibia at dorsiflexion of the ankle. This had caused a slowly progressive enlargement of the lesion because of fibrosis resulting from reactive inflammation associated with this repetitive microtrauma, thus causing irritation, pain, and synovitis due to impingement.<\/jats:p>","DOI":"10.1053\/jars.2000.8246","type":"journal-article","created":{"date-parts":[[2005,2,10]],"date-time":"2005-02-10T03:51:33Z","timestamp":1108007493000},"page":"1-5","source":"Crossref","is-referenced-by-count":7,"title":["Localized pigmented villonodular synovitis as a rare cause of chronic anterolateral ankle pain in an equestrienne"],"prefix":"10.1002","volume":"16","author":[{"given":"Vicente","family":"Sanchis\u2010Alfonso","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery Hospital Arnau de Vilanova Valencia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emilio","family":"Villanueva\u2010Garc\u00eda","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery Hospital Arnau de Vilanova Valencia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2000,10,1]]},"reference":[{"key":"e_1_2_2_2_1","volume-title":"Tumors of the soft tissues","author":"Lattes R","year":"1982"},{"key":"e_1_2_2_3_1","volume-title":"Tumores y lesiones seudotumorales de huesos y articulaciones","author":"Schajowicz F","year":"1982"},{"key":"e_1_2_2_4_1","series-title":"Soft tissue tumors","first-page":"735","volume-title":"Benign tumors and tumor\u2010like lesions of synovial tissue","author":"Enzinger 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giant\u2010cell tumor, or myeloplaxoma of the tendon sheath with some considerations of this tendon sheath lesion itself","volume":"31","author":"Jaffe HL","year":"1941","journal-title":"Arch Pathol"},{"key":"e_1_2_2_19_1","doi-asserted-by":"publisher","DOI":"10.1097\/00007611-196608000-00019"},{"key":"e_1_2_2_20_1","first-page":"251","article-title":"Light microscopic and electron microscopic studies of individual cells in pigmented villonodular synovitis and bursitis (Jaff\u00e9)","volume":"14","author":"Hirohata K","year":"1968","journal-title":"Kobe J Med Sci"},{"key":"e_1_2_2_21_1","first-page":"335","article-title":"The pathogenesis and long\u2010term end results of pigmented villonodular synovitis","volume":"114","author":"Granowitz SP","year":"1976","journal-title":"Clin Orthop"},{"key":"e_1_2_2_22_1","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199173100-00011"},{"key":"e_1_2_2_23_1","first-page":"26","article-title":"Cytokine and matrix metalloproteinase expression 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