Claw hand deformity is associated with the compression of which nerves?

Claw hand deformity is a specific condition that results from nerve damage, particularly affecting the muscles that control finger extension and flexion. This condition typically occurs due to the compression or injury of both the median and ulnar nerves.

The ulnar nerve primarily affects the intrinsic muscles of the hand which are responsible for the fine motor control and the ability to spread the fingers. Damage to this nerve can lead to a characteristic inability to fully extend the digits, particularly the ring and little fingers, resulting in the claw-like appearance.

In addition, the median nerve is responsible for the function of the opponens pollicis and the first and second lumbricals. Dysfunction of the median nerve can lead to difficulty in flexing the thumb and the index finger, which further contributes to the deformity. In combination, the involvement of both the median and ulnar nerves can significantly affect hand function, leading to the claw hand appearance.

Thus, identifying claw hand deformity as being associated with the compression of both the median and ulnar nerves provides a comprehensive understanding of the underlying anatomical and functional mechanisms involved in this condition.