Peripheral nerve function extends beyond motor and cutaneous roles. The posterior interosseous nerve terminates in the dorsal wrist capsule and contributes innervation to the TFCC. The dorsal sensory branch of the ulnar nerve and the medial antebrachial cutaneous nerve add further afferent input. These represent part of a broader network of ligamentous and capsular afferents essential to wrist proprioception. Their continuous feedback allows the central nervous system to refine motor output, sta