{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T16:29:29Z","timestamp":1786120169441,"version":"build-2736575974"},"reference-count":18,"publisher":"Oxford University Press (OUP)","issue":"Supplement_1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Patellofemoral pain (PFP) is a common musculoskeletal condition and a leading cause of medical encounters in the U.S. Armed Forces. Despite its impact on readiness, little is known about its incidence and clinical correlates in active-duty service members (ADSMs).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods<\/jats:title>\n                    <jats:p>We conducted a retrospective analysis of ADSMs from 2016 to 2022 using the Medical Assessment and Readiness System. PFP was identified using ICD-10 codes. Demographics, comorbidities, and service branch were extracted from administrative and clinical records. Chi-square tests and Poisson regression estimated unadjusted associations, while multivariable generalized linear models (GLMs) assessed adjusted risk ratios (aRRs) for PFP and its sequelae, including subsequent knee osteoarthritis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Among 2,477,394 ADSMs, 85,023 (3.4%) had an initial PFP diagnosis, yielding an incidence rate of 0.94 per 100 person-years. The Army accounted for 47.0% of cases despite comprising 36.4% of the force. Female sex (aRR\u2009=\u20091.26, 95% confidence interval [CI]: 1.24-1.28), age 31-40 years (aRR\u2009=\u20091.32, 95% CI: 1.29-1.35), non-Hispanic Black race (aRR\u2009=\u20091.40, 95% CI: 1.38-1.43), vitamin D deficiency, hypertension, and hyperlipidemia were all independently associated with PFP. During follow-up, 4.4% of ADSMs with PFP developed knee osteoarthritis, compared with 0.9% without PFP, representing a 4-fold increased risk (aRR\u2009=\u20094.0; 95% CI: 3.9-4.1).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>PFP disproportionately affects Army personnel, and strongly predicts knee osteoarthritis. These findings highlight the need for targeted prevention and early management strategies to mitigate long-term disability and preserve military readiness.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/milmed\/usag050","type":"journal-article","created":{"date-parts":[[2026,1,30]],"date-time":"2026-01-30T12:40:44Z","timestamp":1769776844000},"page":"168-174","source":"Crossref","is-referenced-by-count":0,"title":["Characterization of Patellofemoral Pain in the U.S. Military, 2016-2022"],"prefix":"10.1093","volume":"191","author":[{"given":"Bryson K","family":"Merrill","sequence":"first","affiliation":[{"name":"Department of Family Medicine, Womack Army Medical Center , Fort Bragg, NC 28310,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8971-1201","authenticated-orcid":false,"given":"Thomas A","family":"Beltran","sequence":"additional","affiliation":[{"name":"Department of Clinical Investigation, Womack Army Medical Center , Fort Bragg, NC 28310,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sean M","family":"Rogers","sequence":"additional","affiliation":[{"name":"Department of Family Medicine, Womack Army Medical Center , Fort Bragg, NC 28310,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlos J","family":"Maldonado","sequence":"additional","affiliation":[{"name":"Department of Clinical Investigation, Womack Army Medical Center , Fort Bragg, NC 28310,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,8,6]]},"reference":[{"key":"2026080616032814800_usag050-B1","doi-asserted-by":"publisher","first-page":"573","DOI":"10.1016\/j.csm.2014.06.004","article-title":"The burden and management of sports-related musculoskeletal injuries and conditions within the US 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