Wrist/Hand Anatomy

The Distal Interphalangeal (DIP) joint is the joint located between the distal phalanx and the middle phalanx of the fingers, allowing for flexion and extension.

The Median Nerve runs through the carpal tunnel, providing sensation to the palm and controlling some muscles in the hand.

The Capitate is one of the carpal bones located in the wrist, specifically the largest bone in the proximal row, articulating with the third metacarpal.

The Ulnar Nerve provides motor and sensory functions to the hand, particularly to the little finger and half of the ring finger.

The Extensor indicis is a muscle in the forearm that extends the index finger, allowing for independent movement.

The Interphalangeal (IP) joints are the joints between the phalanges of the fingers, including both the proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints.

The Metacarpophalangeal (MCP) joint is the joint between the metacarpal bones of the hand and the proximal phalanges of the fingers, allowing for flexion, extension, abduction, and adduction.

The Radial Nerve is responsible for the extension of the elbow, wrist, and fingers, and provides sensation to the back of the arm and hand.

The Flexor digitorum profundus is a muscle that flexes the distal phalanges of the fingers, allowing for gripping and grasping.

The carpal tunnel is a narrow passageway in the wrist that houses the median nerve and tendons, and is significant for its role in carpal tunnel syndrome.