Which ligament is on the back of the hand between the ulna and the carpal bones?

• A. Dorsal Ulnocarpal Ligament
• B. Plantar Calcaneonavicular Ligament
• C. Proximal Radioulnar Joint
• D. Transverse Carpal Ligament

Answer: (A)

The key idea is identifying a wrist ligament that runs on the back (dorsal) side and connects the ulna to the carpal bones. The dorsal ulnocarpal ligament does exactly that, spanning from the ulna to the lunate and triquetrum on the dorsal wrist. It helps stabilize the ulnar side of the wrist as the hand moves.

Why the others don’t fit: the plantar calcaneonavicular ligament is a foot ligament (between the calcaneus and navicular). The proximal radioulnar joint is a joint between the radius and ulna, not a single ligament. The transverse carpal ligament lies on the palm, forming the roof of the carpal tunnel, not on the back of the hand.