{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T15:03:36Z","timestamp":1775919816736,"version":"3.50.1"},"reference-count":41,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T00:00:00Z","timestamp":1773792000000},"content-version":"vor","delay-in-days":76,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["esskajournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J. exp. orthop."],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To determine whether preoperative whole\u2010organ knee magnetic resonance imaging findings are associated with 2\u2010year patient\u2010reported outcomes after inverted V\u2010shaped high tibial osteotomy (iV\u2010HTO). The hypothesis of this study was that preoperative tibiofemoral cartilage wear or meniscal lesion predicts worse outcomes 2 years after iV\u2010HTO, while patellofemoral joint degeneration does not have a significant impact.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      A retrospective review was conducted of iV\u2010HTO cases (2015\u20132022) with preoperative magnetic resonance imaging and 2\u2010year follow\u2010up data. Whole\u2010Organ Magnetic Resonance Imaging Score (WORMS) sub\u2010scores for cartilage, meniscus, bone marrow lesions, cysts and effusion were recorded for each compartment. Paired\n                      <jats:italic>t<\/jats:italic>\n                      tests were used to compare preoperative and post\u2010operative clinical and radiographic outcomes. Spearman correlations assessed associations between WORMS and Knee Injury and Osteoarthritis Outcome Score (KOOS) and Lysholm score. Multivariable linear regression analyzed predictors of 2\u2010year KOOS Symptoms, with patellar cartilage WORMS subscale (0\u201312) entered a priori and adjusted for preoperative symptoms, age, body mass index (BMI) and medial femoral condyle WORMS.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Forty\u2010six knees (39 patients; age, 55.5\u2009\u00b1\u20098.3 years; BMI, 27.9\u2009\u00b1\u20094.0\u2009kg\/m\n                      <jats:sup>2<\/jats:sup>\n                      ) were included. The Lysholm score and KOOS improved significantly from baseline to 2 years. The post\u2010operative hip\u2013knee\u2013ankle angle, weight\u2010bearing line, femorotibial angle and medial proximal tibial angle differed significantly, while patellar height indices remained unchanged. Tilting angle and lateral shift ratio improved. There was no significant correlation between WORMS and Lysholm scores. WORMS cartilage subscale correlated negatively with KOOS Symptoms; strongest for the patella, followed by the medial femoral condyle. In the adjusted model, higher patellar WORMS independently predicted lower KOOS Symptoms at 2 years; other covariates were nonsignificant.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>iV\u2010HTO yields significant 2\u2010year clinical and radiographic improvements. However, advanced preoperative patellar cartilage degeneration independently predicted worse KOOS Symptoms despite coronal realignment and enhanced patellofemoral congruity. Preoperative patellofemoral cartilage grading should guide indications, counselling and preoperative planning.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level IV, retrospective cohort study.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/jeo2.70690","type":"journal-article","created":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T11:59:24Z","timestamp":1773835164000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Preoperative knee cartilage degeneration in the patellofemoral joint results in worse clinical outcome scores 2 years after inverted V\u2010shaped high tibial osteotomy"],"prefix":"10.1002","volume":"13","author":[{"given":"Yeonseok","family":"Jo","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, Graduate School of Medicine Hokkaido University Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1479-3892","authenticated-orcid":false,"given":"Dai","family":"Sato","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Graduate School of Medicine Hokkaido University Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Taku","family":"Ebata","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Graduate School of Medicine Hokkaido University Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoshiaki","family":"Hosokawa","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Graduate School of Medicine Hokkaido University Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masato","family":"Hara","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Graduate School of Medicine Hokkaido University Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Koji","family":"Iwasaki","sequence":"additional","affiliation":[{"name":"Department of Functional Reconstruction for the Knee Joint, Graduate School of Medicine Hokkaido University Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masatake","family":"Matsuoka","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Graduate School of Medicine Hokkaido University Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomohiro","family":"Onodera","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Graduate School of Medicine Hokkaido University Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eiji","family":"Kondo","sequence":"additional","affiliation":[{"name":"Centre for Sports Medicine Hokkaido University Hospital Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Norimasa","family":"Iwasaki","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Graduate School of Medicine Hokkaido University Sapporo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2026,3,18]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.88B10.17532"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.52312\/jdrs.2024.1636"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-010-1077-5"},{"key":"e_1_2_11_5_1","first-page":"317","article-title":"Patella infera. 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