Pain Catastrophizing and Pain-Related Fear in Osteoarthritis Patients: Relationships to Pain and Disability

• Published in: Journal of pain and symptom management 2009-05, Vol.37 (5), p.863-872
• Main Authors: Somers, Tamara J., PhD, Keefe, Francis J., PhD, Pells, Jennifer J., PhD, Dixon, Kim E., PhD, Waters, Sandra J., PhD, Riordan, Paul A., BA, Blumenthal, James A., PhD, McKee, Daphne C., PhD, LaCaille, Lara, PhD, Tucker, Jessica M., MS, Schmitt, Daniel, PhD, Caldwell, David S., MD, Kraus, Virginia B., MD, PhD, Sims, Ershela L., PhD, Shelby, Rebecca A., PhD, Rice, John R., MD
• Format: Article
• Language: English
• Subjects: Activities of Daily Living; Anesthesia & Perioperative Care; Anxiety - diagnosis; Anxiety - epidemiology; Anxiety - psychology; Biological and medical sciences; Comorbidity; Disability; Disability Evaluation; Diseases of the osteoarticular system; Fear; Female; Humans; Knees; Male; Medical sciences; Middle Aged; Miscellaneous. Osteoarticular involvement in other diseases; North Carolina - epidemiology; Osteoarthritis; Osteoarthritis, Knee - diagnosis; Osteoarthritis, Knee - epidemiology; Osteoarthritis, Knee - psychology; Pain; Pain - diagnosis; Pain - epidemiology; Pain - psychology; Pain catastrophizing; Pain Medicine; pain-related fear; Pharmacology. Drug treatments; Risk Assessment - methods; Risk Factors; Walking speed
• ISSN: 0885-3924; 1873-6513
• DOI: 10.1016/j.jpainsymman.2008.05.009

Abstract This study examined the degree to which pain catastrophizing and pain-related fear explain pain, psychological disability, physical disability, and walking speed in patients with osteoarthritis (OA) of the knee. Participants in this study were 106 individuals diagnosed as having OA of at least one knee, who reported knee pain persisting for six months or longer. Results suggest that pain catastrophizing explained a significant proportion (all P s ≤ 0.05) of variance in measures of pain (partial r2 [p r2 ] = 0.10), psychological disability (p r2 = 0.20), physical disability (p r2 = 0.11), and gait velocity at normal (p r2 = 0.04), fast (p r2 = 0.04), and intermediate speeds (p r2 = 0.04). Pain-related fear explained a significant proportion of the variance in measures of psychological disability (p r2 = 0.07) and walking at a fast speed (p r2 = 0.05). Pain cognitions, particularly pain catastrophizing, appear to be important variables in understanding pain, disability, and walking at normal, fast, and intermediate speeds in knee OA patients. Clinicians interested in understanding variations in pain and disability in this population may benefit by expanding the focus of their inquiries beyond traditional medical and demographic variables to include an assessment of pain catastrophizing and pain-related fear.