A flap can be classified or described by its tissue composition, vascularity, type of movement, and location in relation to the defect. This article details these classifications with illustrations and examples.
The proximal interphalangeal joint (PIPJ) is a bicondylar, synovial, hinge joint. It is stabilized by the volar plate, collateral ligaments, and joint capsule. This article details the anatomy of the PIPJ.