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Rheumatic hand's clinical, functional and imagiological correlations following metacarpophalangeal joint silicone
Sergio Figueiredo1, Ana Daniela Pereira1, Marta Santos Silva2
1Department of Orthopaedics II, Centro Hospitalar de Leiria, Leiria, Portugal.
Objective:
Evaluation 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.
Methods:
Cross-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.
Results:
Objective 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).
Conclusions:
Most measurements strongly correlate with each other, with emphasis on objective dexterity measurement.