The evaluation of pain in patients with knee osteoarthritis: the knee pain scale

J Rheumatol. 1995 Jun;22(6):1124-9.


Objective: To develop and validate a knee pain scale (KPS) for use with osteoarthritis (OA) of the knee.

Methods: Patients with documented evidence of knee OA completed the KPS and a test battery including measures of physical functioning, physical performance, and depression. Analyses were conducted to confirm the 4-factor structure of the measure, determine alpha reliabilities, assess the test-retest reliability, and examine the construct validity of the KPS.

Results: Confirmatory factor analysis revealed that the KPS has 4 subscales, including frequency and intensity of pain experienced during both ambulation/climbing and transfer activities. All reliabilities were in excess of 0.80 and the subscales of the KPS shared expected variance with both self-reported and objective indices of dysfunction.

Conclusion: The KPS has good psychometric properties for assessing pain experienced in conjunction with the performance of activities of daily living. Although at present it is a research tool, with further study it should prove valuable in clinical practice as well.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Activities of Daily Living
  • Aged
  • Depression / diagnosis
  • Disability Evaluation
  • Evaluation Studies as Topic
  • Factor Analysis, Statistical
  • Female
  • Humans
  • Knee Joint*
  • Male
  • Middle Aged
  • Osteoarthritis / physiopathology*
  • Osteoarthritis / psychology
  • Pain
  • Pain Measurement*
  • Surveys and Questionnaires