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Dimensionality of measures for severe unilateral ankle arthritis.

Publication ,  Journal Article
Cook, C; Queen, RM; Slaven, EJ; DeOrio, JK; Easley, ME; Nunley, JA
Published in: PM R
November 2010

OBJECTIVE: To analyze the dimensionality of 2 self-report outcome measures (Foot/Ankle Disability Index [FADI] and Short-Form [SF]-36), 3 biomechanical measures (stance and step symmetry measures, gait speed, and step width), 2 physical-performance measures (timed get-up and go [TUG] and 4-square step test [4SST]), and 1 clinician-report outcome measure (American Orthopaedic Foot and Ankle Society [AOFAS] Hindfoot Scale) in a patient population with unilateral ankle arthritis. These measures captured the following functions: mobility and speed, pain and its relationship to function, social integration, and symmetry and efficiency of gait. DESIGN: Case series design. SETTING: Biomechanical research laboratory adjacent to a busy orthopedic clinical practice. PATIENTS: Seventy-nine consecutive patients with unilateral traumatic arthritis who were candidates for a total ankle replacement. METHODS: An exploratory factor analysis with oblimin rotation was performed to determine the dimensions of the physical performance, biomechanical, self-report, and clinician-report measures. MAIN OUTCOME MEASUREMENTS: Outcomes measures included the SF-36 and pertinent subscales, gait speed, the 4SST, the TUG, the FADI, the AOFAS Hindfoot Scale, and biomechanical measures of step width, step symmetry, and stance symmetry. RESULTS: Four distinct dimensions were captured during factor analysis. Factor 1 included the TUG, gait speed, the 4SST, and step width; factor 2 included the FADI, the SF-36 bodily pain score, and the SF-36 physical function score; factor 3 included the biomechanical scores of stance symmetry ratio and the step symmetry ratio; and factor 4 included SF-36 social functioning and the AOFAS Hindfoot Scale. CONCLUSIONS: Findings suggest that various outcome measures for the ankle capture different dimensions and should be considered when evaluating the presence of disability or long-term change in outcome.

Duke Scholars

Published In

PM R

DOI

ISSN

1934-1482

Publication Date

November 2010

Volume

2

Issue

11

Start / End Page

987 / 994

Location

United States

Related Subject Headings

  • Outcome Assessment, Health Care
  • Middle Aged
  • Male
  • Humans
  • Health Status Indicators
  • Gait
  • Female
  • Factor Analysis, Statistical
  • Disability Evaluation
  • Biomechanical Phenomena
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Cook, C., Queen, R. M., Slaven, E. J., DeOrio, J. K., Easley, M. E., & Nunley, J. A. (2010). Dimensionality of measures for severe unilateral ankle arthritis. PM R, 2(11), 987–994. https://doi.org/10.1016/j.pmrj.2010.08.001
Cook, Chad, Robin M. Queen, Emily J. Slaven, James K. DeOrio, Mark E. Easley, and James A. Nunley. “Dimensionality of measures for severe unilateral ankle arthritis.PM R 2, no. 11 (November 2010): 987–94. https://doi.org/10.1016/j.pmrj.2010.08.001.
Cook C, Queen RM, Slaven EJ, DeOrio JK, Easley ME, Nunley JA. Dimensionality of measures for severe unilateral ankle arthritis. PM R. 2010 Nov;2(11):987–94.
Cook, Chad, et al. “Dimensionality of measures for severe unilateral ankle arthritis.PM R, vol. 2, no. 11, Nov. 2010, pp. 987–94. Pubmed, doi:10.1016/j.pmrj.2010.08.001.
Cook C, Queen RM, Slaven EJ, DeOrio JK, Easley ME, Nunley JA. Dimensionality of measures for severe unilateral ankle arthritis. PM R. 2010 Nov;2(11):987–994.
Journal cover image

Published In

PM R

DOI

ISSN

1934-1482

Publication Date

November 2010

Volume

2

Issue

11

Start / End Page

987 / 994

Location

United States

Related Subject Headings

  • Outcome Assessment, Health Care
  • Middle Aged
  • Male
  • Humans
  • Health Status Indicators
  • Gait
  • Female
  • Factor Analysis, Statistical
  • Disability Evaluation
  • Biomechanical Phenomena