{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T07:51:00Z","timestamp":1777881060247,"version":"3.51.4"},"reference-count":64,"publisher":"SAGE Publications","issue":"12","license":[{"start":{"date-parts":[[2025,12,1]],"date-time":"2025-12-01T00:00:00Z","timestamp":1764547200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2025,12,1]],"date-time":"2025-12-01T00:00:00Z","timestamp":1764547200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Journal of Sports Medicine"],"published-print":{"date-parts":[[2025,12]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Bone contusions after acute posterior cruciate ligament (PCL) injury are commonly observed on magnetic resonance imaging (MRI), providing insight into potential mechanisms of injury.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>To quantify the size of bone contusions and their locations\u2014lateral tibial plateau (LTP), lateral femoral condyle (LFC), medial tibial plateau (MTP), medial femoral condyle (MFC), and subspinous subregion (SS)\u2014observed on MRI scans of isolated PCL-torn knees acquired within 4 weeks after injury.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Cross-sectional study. Level of evidence, 3.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>We retrospectively reviewed the clinic notes, operative notes, and imaging of 72 patients (55 men and 17 women) with a grade 2 or 3 primary isolated PCL tear, without any fractures, meniscal tears, or other knee ligament tears, whose MRI scans were obtained within 4 weeks of the injury. The location (LTP, LFC, MTP, MFC, and SS), combined number of compartments, and volume of the bone contusion were recorded based on the MRI Osteoarthritis Knee Score (MOAKS) system\u2014a standardized semi-quantitative mapping technique.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      Contusions were observed in 59 of 72 (81.9%) patients. According to the MOAKS system, areas with a high frequency of bone contusion were anterior SS (30; 41.7%), anterior LTP (26; 36.1%), anterior MTP (24; 33.3%), and posterior LFC (23; 31.9%). Female patients showed significantly higher incidence of bone contusion than male patients in the posterior LTP (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .024), anterior LFC (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .017), posterior LFC (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .006), total MFC (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001), and posterior SS (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .039).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Bone contusion was observed in most patients with acute isolated PCL rupture. The most common contusion locations observed were anterior SS, anterior LTP, anterior MTP, and posterior LFC. Female patients demonstrated a greater prevalence and extent of bone contusions compared with their male counterparts.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/23259671251397639","type":"journal-article","created":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T17:47:41Z","timestamp":1765820861000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Distribution of Bone Contusion Patterns in Knees with Acute Isolated Posterior Cruciate Ligament Tears"],"prefix":"10.1177","volume":"13","author":[{"given":"Yuxuan","family":"Zou","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China"},{"name":"Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang Province, China"},{"name":"Key Laboratory of Motor System Disease Research and Precision Therapy 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