{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T15:52:06Z","timestamp":1776268326242,"version":"3.50.1"},"reference-count":54,"publisher":"Journal of Orthopaedic & Sports Physical Therapy (JOSPT)","issue":"2","content-domain":{"domain":["www.jospt.org"],"crossmark-restriction":true},"short-container-title":["JOSPT Open"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:p>OBJECTIVE: To examine the associations between pain catastrophizing, pain self-efficacy, and physical function among individuals with chronic knee osteoarthritis.<\/jats:p>\n                  <jats:p>DESIGN: Cross-sectional observational study.<\/jats:p>\n                  <jats:p>\n                    METHODS: Data were collected from patients using a survey at routine visits to orthopedic providers. The participants (n = 104) were people with knee osteoarthritis (62.5% female), a mean age of 65 years (range: 29\u201391), and a mean body mass index of 31.86 \u00b1 9.05 kg\/m\n                    <jats:sup>2<\/jats:sup>\n                    . We estimated a regression-based mediation (PROCESS Model 4; 10,000 bootstrap samples) to test whether pain self-efficacy statistically mediated the association between pain catastrophizing and physical function.\n                  <\/jats:p>\n                  <jats:p>RESULTS: The total effect of pain catastrophizing on physical function was statistically significant. Pain catastrophizing had a significant direct effect on physical function after controlling for covariates. We observed a significant indirect effect of pain catastrophizing through pain self-efficacy, suggesting that the relationship between pain catastrophizing and physical function was partially mediated by pain self-efficacy.<\/jats:p>\n                  <jats:p>CONCLUSION: The observed pattern was consistent with individuals reporting lower pain self-efficacy also reporting higher pain catastrophizing and lower physical function. JOSPT Open 2026;4(2):215-222. 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