Question

which structure is compressed in a condition causing medial forearm and hand paresthesia?
inferior trunk
superior trunk
posterior cord
ulnar branch
view hint for question 22

Explanation:

Paresthesia in the medial forearm and hand is linked to compression of the nerve that innervates this region. The ulnar branch (ulnar nerve) supplies sensation to the medial forearm, medial hand, and the 4th/5th fingers. The inferior trunk, superior trunk, and posterior cord of the brachial plexus innervate other regions of the upper limb, not the medial forearm and hand specifically.

Answer:

Ulnar branch