Proximal interphalangeal region

The proximal interphalangeal region is the topographic region of the digit centered on the proximal interphalangeal (PIP) joint, located between the proximal and middle phalanges. It includes the joint and its periarticular structures, including the articular capsule, collateral ligaments, palmar ligaments, synovial recesses, and the surrounding soft tissues.

In the thoracic limb, the palmar aspect is described as palmar.