Abstract
ObjectiveEvaluation of rheumatoid hand‐associated metacarpophalangeal joint silicone arthroplasty most often relies on functional scores alone. This study aimed to understand the correlation between perceived and observed function, strength, and alignment. MethodsCross‐sectional study including all 11 women (15 hands) submitted to second to fifth metacarpophalangeal joint arthroplasty due to rheumatoid arthritis involvement for a time period of seven years. Measurements relied on the Michigan Hand Outcomes Questionnaire, Lafayette Purdue Pegboard, pinch and grip strength, and analysis of a lateral “OK‐sign” X‐ray view. Correlation analysis used Spearman's coefficient, assuming statistical significance for p‐values<0.05. ResultsObjective function was strongly correlated with all other variables (p<0.05), while perceived function failed to correlate with articular alignment in both measurements (p=0.240 and p=0.354). Strength and alignment were also strongly correlated (p<0.05). ConclusionsMost measurements strongly correlate with each other, with emphasis on objective dexterity measurement.
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