J Knee Surg 2020; 33(08): 810-817
DOI: 10.1055/s-0039-1688691
Original Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Evaluation of the PROMIS Physical Function Computer Adaptive Test in Patients Undergoing Knee Surgery

Megan Miles
1   Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
2   Department of Orthopaedic Surgery, MedStar Union Memorial Hospital, Baltimore, Maryland
,
1   Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
3   Department of Orthopaedic Surgery, SUNY Downstate Medical Center, Brooklyn, New York
,
Julio J. Jauregui
1   Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
,
Andrew G. Dubina
1   Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
,
Michael P. Smuda
1   Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
,
Craig H. Bennett
1   Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
,
Jonathan D. Packer
1   Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
,
R. Frank Henn III
1   Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
› Author Affiliations
Funding This work was supported by a grant from The James Lawrence Kernan Hospital Endowment Fund, Incorporated.
Further Information

Publication History

26 August 2018

18 March 2019

Publication Date:
08 May 2019 (online)

Abstract

A cross-sectional analysis of data derived from patients undergoing knee surgery at a single institution was conducted. The objectives of the study were to (1) compare how the Patient-Reported Outcomes Measurement Information System physical function (PROMIS PF) computer adaptive test performs against the International Knee Documentation Committee (IKDC) Subjective Knee Form in evaluating functional status, and (2) to determine demographic, clinical, and psychosocial correlates of each outcome measure in an urban population undergoing a variety of knee surgeries. We hypothesized that there would be a strong correlation between PROMIS PF and IKDC, with minimal floor and ceiling effects, and similar clinical correlates. The sample consisted of 412 patients undergoing knee surgery. Bivariate and multivariable statistical analyses were performed to identify significant independent predictors. The PROMIS PF and IKDC scores were strongly correlated (r s = 0.71, p < 0.001), and neither exhibited floor nor ceiling effects. Lower body mass index, no preoperative opioid use, lower Charlson comorbidity index score, employment, and lower income were found to be significant independent predictors for better scores on both PROMIS PF and IKDC. Patients undergoing total knee arthroplasty had significantly lower PROMIS PF and IKDC scores (p < 0.05). Potential explanations for these findings are presented, and clinical implications are discussed.

Note

This study was approved by the Institutional Review Board Committee at the University of Maryland, Baltimore, MD (HP-00062261).