Final answer:
The palmar intercarpal ligament is a long intrinsic ligament in the hand that stabilizes the carpal bones and helps maintain the U-shaped grouping of the carpal bones. It forms the walls and floor of the carpal tunnel, a passageway through which tendons and nerves pass into the hand. Overuse or injury to the tendons in the carpal tunnel can lead to carpal tunnel syndrome.
Step-by-step explanation:
The palmar intercarpal ligament is a long intrinsic ligament in the hand that plays a key role in stabilizing the carpal bones. It helps maintain the U-shaped grouping of the carpal bones in the articulated hand by connecting them together, forming the walls and floor of the carpal tunnel. The carpal tunnel is a passageway through which nine muscle tendons and a major nerve pass to enter the hand from the anterior forearm. Overuse or injury to the tendons in the carpal tunnel can lead to compression of the nerve, resulting in carpal tunnel syndrome.