What are the ulnar deviator muscles?

The ulnar deviator muscles are primarily responsible for the movement of the wrist towards the ulnar side (the little finger side). The extensor carpi ulnaris and flexor carpi ulnaris are specifically involved in this action.

The extensor carpi ulnaris is located on the posterior aspect of the forearm, and it assists in extending the wrist while also contributing to ulnar deviation. On the other hand, the flexor carpi ulnaris, situated on the anterior aspect of the forearm, flexes the wrist and also aids in ulnar deviation. The coordinated action of these two muscles allows for effective ulnar deviation during various movements of the wrist.

In contrast, other muscle groups listed do not contribute to ulnar deviation. For example, the flexor carpi radialis and extensor carpi radialis are more involved in radial deviation (movement towards the thumb side) and act to flex or extend the wrist rather than move it towards the ulnar side. Similarly, the flexor digitorum and abductor pollicis brevis, along with the abductor pollicis longus and extensor muscles of the thumb, are primarily associated with finger