• Jasvinder A Singh and David G Lewallen.
• Medicine Service and Center for Surgical Medical Acute Care Research and Transitions (C-SMART), Birmingham VA Medical Center, Department of Medicine, School of Medicine and Division of Epidemiology, School of Public Health, University of Alabama, Birmingham, AL and Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN, USA. Medicine Service and Center for Surgical Medical Acute Care Research and Transitions (C-SMART), Birmingham VA Medical Center, Department of Medicine, School of Medicine and Division of Epidemiology, School of Public Health, University of Alabama, Birmingham, AL and Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN, USA. Medicine Service and Center for Surgical Medical Acute Care Research and Transitions (C-SMART), Birmingham VA Medical Center, Department of Medicine, School of Medicine and Division of Epidemiology, School of Public Health, University of Alabama, Birmingham, AL and Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN, USA. Jasvinder.md@gmail.com.
• Rheumatology (Oxford). 2014 Oct 1;53(10):1752-8.

ObjectiveOur objective was to study the use of pain medications for persistent knee pain and their predictors after revision total knee arthroplasty (TKA).MethodsWe examined whether demographic (gender, age) and clinical characteristics [BMI, co-morbidity measured by the Deyo-Charlson index (a 5-point increase), anxiety and depression] predict the use of NSAIDs and narcotic pain medications 2 and 5 years after revision TKA. Multivariable logistic regression adjusted for these predictors as well as operative diagnosis, American Society of Anesthesiologists class and distance from the medical centre.ResultsA total of 1533 patients responded to the 2-year questionnaire and 881 responded to the 5-year questionnaire. NSAID use was reported by 13.4% (206/1533) of patients at 2 years and 16.7% (147/881) at 5 years. Narcotic medication use was reported by 5.4% (83/1533) of patients at 2 years and 5.9% (52/881) at 5 years. Significant predictors of the use of NSAIDs for index TKA pain at 2 and 5 years were age >60-70 years [odds ratio (OR) 0.62 (95% CI 0.39, 0.98) and 0.46 (0.25, 0.85)] compared with age ≤60 years and a higher Deyo-Charlson index [OR 0.51 (95% CI 0.28, 0.93)] per 5-point increase at 5-year after revision TKA. Significant predictors of narcotic pain medication use for index TKA pain were age >60-70 years [OR 0.41 (0.21, 0.78)] and >70-80 years [0.40 (95% CI 0.22, 0.73)] at 2 years and depression [OR 4.58 (95% CI 1.58, 13.18)] at 5 years.ConclusionYounger age and depression were risk factors for the use of NSAIDs and narcotic pain medications for index TKA pain at 2- and 5-years after revision TKA.© The Author 2014. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

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