Document Type
Article
Original Publication Date
2024
Journal/Book/Conference Title
PLoS ONE
Volume
19
Issue
4
DOI of Original Publication
10.1371/journal.pone.0300439
Date of Submission
May 2024
Abstract
Introduction: Interpretations of patient-reported outcome measures following knee arthroplasty lack context and typically do not account for costs, risks and benefits compared to an alternative treatment. The primary purpose of our paper is to estimate expectations patients have for pain and function destination outcome, six-months following surgery relative to the outcome expected if knee arthroplasty was not done. Secondary purposes were to determine if statistically significant changes in the smallest worthwhile six-month outcome occurred following an interactive discussion and to assess the construct validity of the expected six-month outcome obtained at baseline.
Methods: This was a secondary analysis of a prospective longitudinal cohort study of 121 patients undergoing knee arthroplasty. Smallest worthwhile effect estimates were determined and expected six-month KOOS Pain and Function, daily activity measures were established during a pre-operative visit.
Results: The average six-month expected (the destination of interest) KOOS Pain score was 75 (IQR = 64 to 86) and the average KOOS Function, daily activity score was 74 (IQR = 59 to 86). The smallest worthwhile effect discussion led to significant changes in expected destination scores. For example, KOOS Pain expected outcome changed from 87.7 (9.8) to 75.0 (13.6), a statistically significant reduction in expected outcome (t(119) = 16.942, p < 0.001.
Conclusion: Six-month expected KOOS outcomes following knee arthroplasty were established and approximate the average six-month outcomes reported in the literature. Validity of these estimates was established. These data can be used to aid shared decision-making discussions regarding patient expectations of knee arthroplasty outcomes during a patient encounter
Rights
© 2024 Riddle, Henderson. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Recommended Citation
Riddle DL, Henderson N (2024) Six-month pain and function outcome expectations were established for total knee arthroplasty using the smallest worthwhile effect. PLoS ONE 19(4): e0300439. https://doi.org/10.1371/journal.pone.0300439
Is Part Of
VCU Physical Therapy Publications
Comments
Originally published at https://doi.org/10.1371/journal.pone.0300439