The Palmar carpometacarpal ligaments are a series of bands on the palmar surface of the carpometacarpal joints that connect the carpal bones to the second through fifth metacarpal bones. The second metacarpal is connected to the trapezium

Trapezium

The word trapezium has several meanings:* - a quadrilateral with one pair of parallel sides ....

. The third metacarpal is connected to the trapezium, to the capitate, and to the hamate. The fourth and fifth metacarpals are connected to the hamate.