{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T15:20:45Z","timestamp":1779376845359,"version":"3.53.1"},"reference-count":29,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2022,7,5]],"date-time":"2022-07-05T00:00:00Z","timestamp":1656979200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,7,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n               <jats:sec>\n                  <jats:title>Introduction<\/jats:title>\n                  <jats:p>Total knee arthroplasty (TKA) for a stiff knee of patients with haemophilia (PWH) represents a challenge for orthopaedic surgeons for the difficulties of exposing the knee and high complication rate compared to a flexible knee.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Aim<\/jats:title>\n                  <jats:p>To optimize the surgical exposure in primary TKA for PWH and to propose a threshold angle of extension contracture in treating haemophilic knee joints, retrospectively.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>Sixty-seven primary TKAs for PWH (mean age, 48\u2009years) were performed, and incisional approaches to joint were standard (58 cases) and V-Y quadricepsplasty (V-Y) (9 cases). The decision of surgical approach was decided intraoperatively by two surgeons. Pre- and post-knee angles were evaluated in each group. Variables in the V-Y group were evaluated using univariate logistic regression analysis and receiver operating characteristic curve analysis.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>Univariate logistic regression analysis demonstrated that the preoperative range of motion (ROM) and flexion were significantly associated with V-Y. Threshold values of preoperative flexion and ROM resulting in V-Y using receiver operating characteristic analysis were 45\u00b0 and 35\u00b0, respectively.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>Primary TKA for PWH using a standard approach may be performed before the stage preoperative flexion &amp;lt;45\u00b0 and ROM &amp;lt;35\u00b0.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/mr\/roac067","type":"journal-article","created":{"date-parts":[[2022,7,5]],"date-time":"2022-07-05T10:06:54Z","timestamp":1657015614000},"page":"851-855","source":"Crossref","is-referenced-by-count":9,"title":["Extension contracture stiff knee in haemophilia: Surgical timing and procedure for total knee arthroplasty"],"prefix":"10.1093","volume":"33","author":[{"given":"Kumiko","family":"Ono","sequence":"first","affiliation":[{"name":"Department of Joint Surgery, Research Hospital, The Institute of Medical Science, The University of Tokyo , Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun","family":"Hirose","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Japan Community Health-care Organization, Tokyo Shinjuku Medical Center , Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Megumi","family":"Noguchi","sequence":"additional","affiliation":[{"name":"Department of Joint Surgery, Research Hospital, The Institute of Medical Science, The University of Tokyo , Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kayoko","family":"Asano","sequence":"additional","affiliation":[{"name":"Department of Joint Surgery, Research Hospital, The Institute of Medical Science, The University of Tokyo , Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masaaki","family":"Yasuda","sequence":"additional","affiliation":[{"name":"Department of Joint Surgery, Research Hospital, The Institute of Medical Science, The University of Tokyo , Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hideyuki","family":"Takedani","sequence":"additional","affiliation":[{"name":"Department of Joint Surgery, Research Hospital, The Institute of Medical Science, The University of Tokyo , Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2022,7,5]]},"reference":[{"key":"2023070502120320400_R1","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1046\/j.1365-2516.2000.00044.x","article-title":"Musculoskeltal complications of haemophilia: the joint","volume":"6","author":"Gilvert","year":"2000","journal-title":"Haemophilia"},{"key":"2023070502120320400_R2","doi-asserted-by":"crossref","first-page":"85","DOI":"10.2106\/JBJS.C.01609","article-title":"Long-term results of primary total knee replacement in patients with 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