{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,20]],"date-time":"2025-10-20T00:26:11Z","timestamp":1760919971096,"version":"build-2065373602"},"reference-count":44,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2023,9,11]],"date-time":"2023-09-11T00:00:00Z","timestamp":1694390400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2023,9,11]],"date-time":"2023-09-11T00:00:00Z","timestamp":1694390400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"},{"start":{"date-parts":[[2023,9,11]],"date-time":"2023-09-11T00:00:00Z","timestamp":1694390400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2023,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Residual anterior knee pain is one of the most common problems after total knee arthroplasty (TKA). However, the contributing factors affecting postoperative anterior knee pain (AKP) remain poorly understood. This study aimed to evaluate the effect of preoperative patellar bone marrow lesions (BMLs) and patellar cartilage defects on postoperative AKP after patellar non\u2010resurfacing TKA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This retrospective study included 336 patients who underwent unilateral TKA without patella resurfacing. All patients underwent preoperative magnetic resonance imaging (MRI) to assess the presence of BMLs and the degree of cartilage defects in the patella. Patients were categorized into four groups according to the presence of BMLs (with or without BMLs) and the degree of cartilage defects (with or without full thickness cartilage defects). The Kujala Anterior Knee Pain Scale (AKPS) and the Hospital for Special Surgery Knee Rating Scale (HSS) scores at 2 years after TKA were compared among the groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Preoperative BMLs in the patella were found in 132 (39.3%) of 336 cases. Among the four groups, the group with both BMLs and full\u2010thickness cartilage defects demonstrated significantly lower AKPS compared to the other groups at 2 years after TKA (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01), but no significant difference was shown in the HSS scores, between these groups. There were no significant differences in either AKPS or HSS scores among the other three patient groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The presence of preoperative BMLs with full\u2010thickness cartilage defects in the patella was associated with worse postoperative AKP after TKA without patella resurfacing. Patella resurfacing should be considered in this patient group to minimize the risk of developing residual AKP after TKA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>III.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-023-07551-4","type":"journal-article","created":{"date-parts":[[2023,9,11]],"date-time":"2023-09-11T03:02:38Z","timestamp":1694401358000},"page":"5048-5056","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Preoperative patellar bone marrow lesions with full thickness cartilage defects correlate with residual anterior knee pain in total knee arthroplasty without patellar resurfacing"],"prefix":"10.1002","volume":"31","author":[{"given":"Ho","family":"Jung Jung","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery, Chuncheon Sacred Heart Hospital Hallym University College of Medicine Chuncheon Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Min Wook","family":"Kang","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Department of Orthopaedic Surgery, Kangnam Sacred Heart Hospital Hallym University College of Medicine Seoul Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jong Hwa","family":"Lee","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Department of Orthopaedic Surgery, Kangnam Sacred Heart Hospital Hallym University College of Medicine Seoul Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joon Kyu","family":"Lee","sequence":"additional","affiliation":[{"name":"<!--<label>3<\/label>--> Department of Orthopaedic Surgery Konkuk University Medical Center Konkuk University School of Medicine Seoul Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1154-3652","authenticated-orcid":false,"given":"Joong Il","family":"Kim","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Department of Orthopaedic Surgery, Kangnam Sacred Heart Hospital Hallym University College of Medicine Seoul Korea"},{"name":"<!--<label>4<\/label>--><!--<institution-id institution-id-type=\"ROR\">https:\/\/ror.org\/03sbhge02<\/institution-id>--> Department of Orthopedic Surgery Hallym University Hospital 1 Singilo, Yeongdeungpo\u2010gu 07441 Seoul 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May 2023","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"13 August 2023","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"11 September 2023","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"All authors have no competing interests to declare.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"This study was approved by Hallym University Kangnam Sacred Heart Hospital Institutional Review Board. (no. 2022-10-031) All investigations were conducted in conformity with ethical principles of research.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Not applicable.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}