{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T15:04:00Z","timestamp":1775919840257,"version":"3.50.1"},"reference-count":39,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,3,24]],"date-time":"2026-03-24T00:00:00Z","timestamp":1774310400000},"content-version":"vor","delay-in-days":82,"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"}],"funder":[{"DOI":"10.13039\/100000069","name":"National Institute of Arthritis and Musculoskeletal and Skin Diseases","doi-asserted-by":"publisher","award":["R37\u2010HD037985"],"award-info":[{"award-number":["R37\u2010HD037985"]}],"id":[{"id":"10.13039\/100000069","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000069","name":"National Institute of Arthritis and Musculoskeletal and Skin Diseases","doi-asserted-by":"publisher","award":["K99AR085752"],"award-info":[{"award-number":["K99AR085752"]}],"id":[{"id":"10.13039\/100000069","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100009633","name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","doi-asserted-by":"publisher","award":["T32\u2010HD007490"],"award-info":[{"award-number":["T32\u2010HD007490"]}],"id":[{"id":"10.13039\/100009633","id-type":"DOI","asserted-by":"publisher"}]}],"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>Patellar tendon structural and mechanical properties undergo significant remodelling after anterior cruciate ligament (ACL) reconstruction (ACLR) using a bone\u2013patellar tendon\u2013bone (BPTB) autograft. Tendon properties have been described at different time points after surgery, but their relationship to patient\u2010reported outcome measures (PROMs) is unclear. The purpose of this investigation was to assess how patellar tendon structure relates to PROMs after ACLR using BPTB autograft.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Thirty\u2010four individuals with unilateral ACLR using a BPTB autograft participated in this secondary exploratory analysis. At time points 1, 3\u20134, and 6\u20139 months after surgery, PROMs were completed and tendon properties (cross\u2010sectional area [CSA], thickness, shear modulus, and viscosity) were assessed using B\u2010mode ultrasound imaging and continuous shear wave elastography. Simple linear regressions evaluated the relationship between Limb Symmetry Index of tendon properties (LSI, [involved\u2009\u00f7\u2009uninvolved]\u2009\u00d7\u2009100) at each time point and PROM scores at the 6\u20139\u2010month time point. Multiple regressions assessed associations between involved limb tendon properties at all three time points and PROMs at 6\u20139 months, adjusting for age, sex, body mass index (BMI), and time from surgery.\n                      <jats:italic>R<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      values for simple linear regressions and\n                      <jats:italic>R<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      change values for multiple regressions were interpreted with an alpha level of 0.05.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Shear modulus LSI at 1 month was negatively correlated with Anterior Cruciate Ligament\u2013Return to Sport after Injury (ACL\u2010RSI) scores at 6\u20139 months (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.022,\n                      <jats:italic>R<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      \u2009=\u20090.225, \u2009=\u2009\u22120.20). Viscosity LSI at the 3\u20134 month time point was positively correlated with Tampa Scale of Kinesiophobia (11\u2010item) (TSK\u201011) scores at 6\u20139 months (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.016,\n                      <jats:italic>R<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      \u2009=\u20090.197, \u2009=\u20090.06). Thickness LSI at 6\u20139 months was positively correlated with Knee Outcome Survey\u2013Activities of Daily Living Scale (KOS\u2010ADLS) scores at 6\u20139 months (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.031,\n                      <jats:italic>R<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      \u2009=\u20090.156, \u2009=\u20090.03). When involved limb patellar tendon properties and covariates were considered, no significant relationships with PROM scores were observed (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.120\u20130.960).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Limb symmetry in tendon properties, but not involved limb properties alone, was associated with PROMs 6\u20139 months after ACLR using BPTB autograft. This suggests that limb symmetry of tendon properties may relate to self\u2010reported recovery.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level II.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/jeo2.70700","type":"journal-article","created":{"date-parts":[[2026,3,24]],"date-time":"2026-03-24T14:40:33Z","timestamp":1774363233000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["An exploratory study of relationships among morphological and mechanical properties of the patellar tendon and patient\u2010reported outcomes after ACLR using BPTB autograft"],"prefix":"10.1002","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-8283-0303","authenticated-orcid":false,"given":"Claudia Jean","family":"Kacmarcik","sequence":"first","affiliation":[{"name":"Department of Physical 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