Answer :
The correct answer is B. Boutonniere deformity. It is commonly seen in patients with rheumatoid arthritis and is characterized by specific joint positions.
Boutonniere deformity is a condition commonly seen in patients with rheumatoid arthritis, characterized by a flexed metacarpophalangeal joint, hyperextended proximal interphalangeal joint, and a flexed distal interphalangeal joint.
Swan neck deformity is the opposite, with a hyperextended metacarpophalangeal joint and flexed proximal interphalangeal joint.
Mallet finger deformity affects the distal interphalangeal joint and results in the inability to extend the finger fully.
De Quervain syndrome refers to inflammation of the tendons on the thumb side of the wrist. It typically causes pain and swelling.
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