A patient is admitted to the hospital with Boutonnière deformity. What are the signs and symptoms that the nurse is likely to find during assessment? Select all that apply.

A. Partial dislocation of finger joints
B. Fingers drift to the ulnar side of the forearm
C. Flexion of the proximal interphalangeal joint
D. Flexion of the metacarpophalangeal joint
E. Hyperextension of the distal interphalangeal joint

A patient with Boutonnière deformity may experience partial dislocation of finger joints, flexion of the proximal interphalangeal joint, and hyperextension of the distal interphalangeal joint. These symptoms arise from the central tendon's lack of strength and the lateral bands' displacement. Flexion of the metacarpophalangeal joint and finger drift to the ulnar side are not associated with this deformity.

Explanation:

A patient admitted to the hospital with Boutonnière deformity can present with multiple signs and symptoms. These include a partial dislocation of finger joints (A), flexion of the proximal interphalangeal joint (C), and hyperextension of the distal interphalangeal joint (E). These three manifest as the central tendon's inability to straighten the finger, and the lateral bands slip out of position, causing the finger to bend abnormally at the middle joint. It's worth noting that the flexion of the metacarpophalangeal joint (D) and the fingers drifting to the ulnar side of the forearm (B) are not common characteristics of Boutonnière deformity.

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