Deep transverse metacarpal ligament
The deep transverse metacarpal ligament connects the palmar surfaces of metacarpophalangeal joints of all the fingers of the hand except the thumb.''''''
Structure
The deep transverse metacarpal ligament is a narrow fibrous band. It blends with the palmar metacarpophalangeal ligaments.Its palmar surface is concave where the flexor tendons pass over it. it, the tendons of the interosseous muscles of the hand pass to their insertions.