Factors That Impact Expectations Before Total Knee Arthroplasty

Matthew S. Hepinstall, John R. Rutledge, Lindsey J. Bornstein, Madhu Mazumdar, Geoffrey H. Westrich

Research output: Contribution to journalArticlepeer-review

66 Scopus citations


This study examined the effect of patient attributes on expectations before total knee arthroplasty (TKA). A total of 1943 patients completed an Expectations Survey before TKA. Demographics, surgical history, baseline Medical Outcomes Study Short Form 36 (SF-36) score, Knee injury and Osteoarthritis Outcome Score (KOOS), and Lower Extremity Activity Scale score were obtained. On univariate analysis, expectations (mean score, 77.6) correlated with SF-36 General Health, age, SF-36 Vitality, KOOS Quality-of-Life, and Lower Extremity Activity Scale. Living alone and history of joint arthroplasty were associated with significantly lower expectations, whereas male sex and white race were associated with higher expectations. On multivariate regression analysis, age, living situation, history of joint arthroplasty, SF-36 General Health, and KOOS Quality-of-Life remained significant predictors of expectations. Our results suggest that high, possibly unrealistic, expectations of TKA are common and should be moderated to maintain patient satisfaction.

Original languageEnglish
Pages (from-to)870-876
Number of pages7
JournalJournal of Arthroplasty
Issue number6
StatePublished - Sep 2011
Externally publishedYes


  • Health instruments
  • Patient expectations
  • Total knee arthroplasty


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