Palmar metacarpophalangeal ligaments

The palmar ligaments (volar ligaments), more commonly termed as volar plates or palmar plates, are thick, dense, fibrocartilaginous structures, placed upon the volar surfaces of the MCP joints in the intervals between the collateral ligaments, to which they are connected; they are loosely united to the metacarpal bones, but are very firmly attached to the bases of the first phalanges. Their volar surfaces are intimately blended with the transverse metacarpal ligament, and present grooves for the passage of the Flexor tendons, the sheaths surrounding which are connected to the sides of the grooves. Their deep surfaces form parts of the articular facets for the heads of the metacarpal bones, and are lined by synovial membranes.