Which nerves are primarily involved in the development of Claw Fingers deformity?

The development of Claw Fingers deformity is primarily associated with the dysfunction of the ulnar nerve and the median nerve. This condition manifests when there is an impairment of muscle function in the hand, particularly affecting the intrinsic muscles that are responsible for finger flexion and extension.

The ulnar nerve innervates many of the muscles that control the fine motor functions of the fingers, particularly the interossei and the hypothenar muscles. A lesion in the ulnar nerve results in weakness of these muscles, leading to an inability to extend the ring and little fingers fully, resulting in their characteristic claw-like posture.

The median nerve controls the majority of the flexor muscles in the forearm and plays a significant role in thumb opposition and the overall grip of the hand. If the median nerve is compromised, it affects the function of the flexor muscles, contributing to the symptoms seen in claw fingers.

The combination of ulnar and median nerve impairment leads to the specific muscle imbalances that result in the deformity, distinguishing this condition from those caused by purely radial nerve or musculocutaneous nerve issues, which do not typically produce claw fingers.