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Explore the influence of pain catastrophizing in Osteoarthritis patients undergoing knee replacement surgery. 30% experience moderate/severe pain post-surgery, with 40% needing assistive devices. Psychological predictors like depression, anxiety, and fear of movement play a role in patient outcomes. Riddle et al. (2009) found patients with high pain catastrophizing were 4.5 times more likely to be non-responders.
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Knee Replacement Surgery • Pain = primary reason for knee replacement • 30% of patients have moderate/severe pain 1 year after surgery • 40% require assistive device to ambulate
101 consecutive OA patients pre-op and6-mos later Covariates Extent of preoperative pain or functional status Severe surgical complications Implant status Comorbidity Psychological predictors Depression Anxiety Pain catastrophizing Self-efficacy Fear of movement Riddle, et al. (2009)
Results • Odds 4.5 times higher (95% CI=1.5,14) that patients with high-pain catastrophizing scores were non-responders