Journal
FOOT & ANKLE INTERNATIONAL
Volume 31, Issue 12, Pages 1075-1080Publisher
SAGE PUBLICATIONS INC
DOI: 10.3113/FAI.2010.1075
Keywords
Foot and Ankle; Trauma; Outcome Measures; Correlation
Categories
Funding
- Orthopaedic Trauma Association
- Canada Research Chair, McMaster University
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Background: Identifying optimal treatment strategies in patients with traumatic foot and ankle injuries has been hampered by the use of multiple available outcome measures with unproven reliability and validity. This prospective observational study aimed to measure the correlation between six functional outcome measures in patients with traumatic foot and ankle injuries. Materials and Methods: Patients 18 years of age or older with a traumatic foot or ankle injury completed the Short Form-12 (SF-12), Short Musculoskeletal Functional Assessment (SMFA), Foot Function Index. (FFI), Foot and Ankle Ability Measure (FAAM), American Academy of Orthopedic Surgeons (AAOS), Foot and Ankle Questionnaire and American Orthopedic Foot and Ankle Society (AOFAS) Ankle-Hindfoot Scale at a single followup visit. Raw scores for each of the outcome measures were calculated. Fifty-two patients were enrolled in our study. Pearson correlation coefficients provided measures of correlation. Results: Moderate to strong correlations were found for most pairwise comparisons of raw scores and functional categorical rankings (rho = vertical bar 0.5243 to 0.92 vertical bar, p < 0.002). The strongest correlations were found between the SMFA, FAAM and AAOS Foot and Ankle Questionnaire. Conclusion: High correlations between scores on six commonly used functional outcome instruments suggest it is likely unnecessary to use more than one instrument when examining functional outcome in patients with traumatic foot and ankle injuries. However, inconsistencies between measures in the same patient population suggest a need for further validation and scrutiny.
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