1 MCQs in Medicine for NEET PG
A 58-year-old woman with a 15-year history of seropositive rheumatoid arthritis presents with progressive hand deformity and loss of pinch grip. Examination reveals bilateral swan neck deformities of the fingers with the characteristic finding marked as **A** in the diagram. She has been on variable DMARD therapy with poor adherence. Which of the following best explains the pathophysiology of the deformity at the structure marked **A**?
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