{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T12:57:34Z","timestamp":1792155454231,"version":"4.4.0"},"reference-count":47,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2023,5,11]],"date-time":"2023-05-11T00:00:00Z","timestamp":1683763200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000142","name":"Arthritis Society","doi-asserted-by":"publisher","award":["SOG\u201017\u20100135"],"award-info":[{"award-number":["SOG\u201017\u20100135"]}],"id":[{"id":"10.13039\/501100000142","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal Orthopaedic Research"],"published-print":{"date-parts":[[2023,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Pain experiences in patients with knee osteoarthritis (OA) may be influenced differently by OA risk factors, reducing the translatability of preclinical research into the clinic. Our objective was to contrast evoked pain patterns after exposure to different OA risk factors including acute joint trauma, chronic instability, or obesity\/metabolic syndrome using rat models of experimental knee OA. We tested longitudinal patterns of evoked pain behaviors (knee pressure pain threshold and hindpaw withdrawal threshold) in young male rats exposed to different OA\u2010inducing risk factors including (1) nonsurgical joint trauma (impact\u2010induced anterior cruciate ligament (ACL) rupture); (2) surgical joint destabilization (ACL + medial meniscotibial ligament transection); and (3) high fat\/sucrose (HFS) diet\u2010induced obesity. Histopathology for synovitis, cartilage damage, and subchondral bone morphology was performed. Pressure pain threshold was reduced (more pain) most, and earlier by joint trauma (Week 4\u201312) and HFS (Week 8\u201328) than by joint destabilization (Week 12). Hindpaw withdrawal threshold was reduced transiently after joint trauma (Week 4), with smaller and later reductions after joint destabilization (Week 12), but not with HFS. Synovial inflammation occurred at Week 4 after joint trauma and instability but only coincided with pain behaviors after joint trauma. Cartilage and bone histopathology were most severe after joint destabilization and least severe with HFS. The pattern, intensity, and timing of evoked pain behaviors varied due to OA risk factor exposure and were inconsistently associated with histopathological OA features. These findings may help to explain the challenges with translating preclinical OA pain research to multimorbid clinical OA contexts.<\/jats:p>","DOI":"10.1002\/jor.25593","type":"journal-article","created":{"date-parts":[[2023,5,3]],"date-time":"2023-05-03T08:40:15Z","timestamp":1683103215000},"page":"2617-2628","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Effects of risk factors on evoked pain patterns in rat models of experimental knee osteoarthritis"],"prefix":"10.1002","volume":"41","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6146-0241","authenticated-orcid":false,"given":"Holly T.","family":"Philpott","sequence":"first","affiliation":[{"name":"Faculty of Health Sciences Western University London Ontario Canada"},{"name":"Bone and Joint Institute Western University London Ontario 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