A client with a complete laceration of the ulnar nerve is referred for an occupational therapy evaluation. During the evaluation, which deformity is most likely to be observed and documented by the occupational therapist?

1) Claw hand deformity
2) Swan neck deformity
3) Boutonniere deformity
4) Dupuytren's contracture

The most likely deformity observed in a client with a complete laceration of the ulnar nerve during an occupational therapy evaluation is claw hand deformity.correct option is 1) Claw hand deformity.

Explanation:

During an occupational therapy evaluation of a client with a complete laceration of the ulnar nerve, the deformity that is most likely to be observed and documented by the occupational therapist is claw hand deformity. A complete laceration of the ulnar nerve typically results in paralysis or paresis in the muscles innervated by the ulnar nerve, leading to a characteristic clawing of the fingers. This happens because the intrinsic muscles of the hand, which are responsible for fine motor movements and are innervated by the ulnar nerve, become weakened or paralyzed. Without these muscles functioning properly, the fingers can hyperextend at the metacarpophalangeal joints and flex at the interphalangeal joints, creating the appearance of a claw.