{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T23:41:30Z","timestamp":1792626090463,"version":"4.5.0"},"reference-count":32,"publisher":"Georg Thieme Verlag KG","issue":"03","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Knee Surg"],"published-print":{"date-parts":[[2022,2]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The impact of trochlear dysplasia on patellofemoral arthroplasty (PFA) has rarely been reported in the literature. The purpose of this study was to explore the effectiveness of PFA in patients with patellofemoral osteoarthritis (PFOA) associated with trochlear dysplasia. From January 2014 to March 2018, 35 patients with PFOA and trochlear dysplasia (29 females and 6 males), underwent PFA, were included in the present retrospective study. Radiological measurements including the patellar tilt (PT), congruence angle (CA), Blackburne\u2013Peel ratio (BPR), tibial tuberosity\u2013trochlear groove (TT\u2013TG) distance, and lateral trochlear inclination (LTI) were assessed pre- and postoperatively to evaluate the changes in patellofemoral alignment. The patient-reported functional outcome was assessed using the Oxford Knee Score. The mean follow-up time was 24 months (range, 18\u201342 months). The intraclass correlation coefficients were excellent for all measurements. The patellofemoral alignment and knee function were significantly improved postoperatively. The PT decreased from 23.3\u2009\u00b1\u20096.3\u2009degrees preoperatively to 6.4\u2009\u00b1\u20092.3\u2009degrees postoperatively (p\u2009&lt;\u20090.001). The CA decreased from 32.3\u2009\u00b1\u20098.6\u2009degrees preoperatively to 10.2\u2009\u00b1\u20093.6\u2009degrees postoperatively (p\u2009&lt;\u20090.001). The lateral trochlear inclination increased from 8.3\u2009\u00b1\u20094.1\u2009degrees preoperatively to 16.0\u2009\u00b1\u20091.2\u2009degrees postoperatively (p\u2009&lt;\u20090.001). The TT\u2013TG distance decreased from 18.2\u2009\u00b1\u20093.8\u2009mm preoperatively to 11.5\u2009\u00b1\u20093.3\u2009mm postoperatively (p\u2009&lt;\u20090.001). The BPR did not significantly change postoperatively (p\u2009=\u20090.390). The average Oxford Knee Score improved from 19.5 preoperatively to 29.2 at 6 months postoperatively (p\u2009&lt;\u20090.001), 37.9 at 1 year postoperatively (p\u2009&lt;\u20090.001), and 39.1 at final follow-up (p\u2009&lt;\u20090.001). No patient developed patellofemoral malalignment or prosthesis loosening during short-term follow-up. PFA achieved favorable therapeutic results in patients with PFOA associated with trochlear dysplasia.<\/jats:p>","DOI":"10.1055\/s-0040-1715099","type":"journal-article","created":{"date-parts":[[2020,8,31]],"date-time":"2020-08-31T20:17:33Z","timestamp":1598905053000},"page":"331-336","source":"Crossref","is-referenced-by-count":2,"title":["Patellofemoral Arthroplasty Improves Patellofemoral Alignment in Patients with Patellofemoral Osteoarthritis with Trochlear Dysplasia"],"prefix":"10.1055","volume":"35","author":[{"given":"Guangmin","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jue","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yike","family":"Dai","sequence":"additional","affiliation":[{"name":"Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Lin","sequence":"additional","affiliation":[{"name":"Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinghui","family":"Niu","sequence":"additional","affiliation":[{"name":"Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fei","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2020,8,31]]},"reference":[{"issue":"01","key":"ref1","doi-asserted-by":"crossref","first-page":"24","DOI":"10.1016\/j.jcot.2017.11.006","article-title":"Patellofemoral arthroplasty: Current concepts","volume":"9","author":"R Cuthbert","year":"2018","journal-title":"J Clin Orthop Trauma"},{"issue":"10","key":"ref2","doi-asserted-by":"crossref","first-page":"1383","DOI":"10.1007\/s00256-013-1664-x","article-title":"Association of trochlear dysplasia with degenerative abnormalities in the knee: data from the osteoarthritis initiative","volume":"42","author":"P M Jungmann","year":"2013","journal-title":"Skeletal Radiol"},{"issue":"02","key":"ref3","doi-asserted-by":"crossref","first-page":"509","DOI":"10.1016\/j.knee.2013.09.009","article-title":"Association and impact of patellofemoral dysplasia on patellofemoral arthropathy and arthroplasty","volume":"21","author":"A Mofidi","year":"2014","journal-title":"Knee"},{"issue":"12","key":"ref4","doi-asserted-by":"crossref","first-page":"3598","DOI":"10.1016\/j.arth.2017.06.048","article-title":"Correction of patellofemoral malalignment with patellofemoral arthroplasty","volume":"32","author":"M Valoroso","year":"2017","journal-title":"J Arthroplasty"},{"issue":"10","key":"ref5","doi-asserted-by":"crossref","first-page":"2574","DOI":"10.1007\/s00167-014-2967-8","article-title":"Evidence of trochlear dysplasia in patellofemoral arthroplasty designs","volume":"22","author":"M Saffarini","year":"2014","journal-title":"Knee Surg Sports Traumatol Arthrosc"},{"issue":"428","key":"ref6","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1097\/01.blo.0000148896.25708.51","article-title":"Patellofemoral arthroplasty: pros, cons, and design considerations","author":"J H Lonner","year":"2004","journal-title":"Clin Orthop Relat Res"},{"issue":"14","key":"ref7","doi-asserted-by":"crossref","first-page":"2432","DOI":"10.1016\/j.jbiomech.2012.06.034","article-title":"In vivo patellar tracking and patellofemoral cartilage contacts during dynamic stair ascending","volume":"45","author":"T Suzuki","year":"2012","journal-title":"J Biomech"},{"issue":"440","key":"ref8","doi-asserted-by":"crossref","first-page":"50","DOI":"10.1097\/01.blo.0000187061.27573.70","article-title":"Patellofemoral arthroplasty: an update","volume":"440","author":"J N Argenson","year":"2005","journal-title":"Clin Orthop Relat Res"},{"issue":"11","key":"ref9","doi-asserted-by":"crossref","first-page":"2174","DOI":"10.1007\/s00167-011-1677-8","article-title":"Complications after patello-femoral versus total knee replacement in the treatment of isolated patello-femoral osteoarthritis. 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