Wrist
Wrist
The wrist (/rɪst/; from the Old English wrist, meaning twist) is a complex joint in the human body that connects the hand to the forearm. It is composed of eight small bones known as the carpal bones, which are arranged in two rows.
Anatomy
The wrist joint is a complex structure consisting of eight carpal bones: the scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, and hamate. These bones are connected by ligaments and allow for a wide range of motion.
The wrist also contains several tendons, which connect the muscles of the forearm to the bones of the hand and fingers. These tendons allow for movement and provide strength to the wrist and hand.
Function
The wrist plays a crucial role in the function of the hand and arm. It allows for a wide range of motion, including flexion, extension, adduction, and abduction. This flexibility allows the hand to be positioned in a variety of ways, which is essential for tasks such as grasping objects, writing, and manipulating small items.
Related Terms
- Carpal Tunnel Syndrome: A common condition that causes pain, numbness, and tingling in the hand and arm. It occurs when the median nerve, which runs through the wrist, becomes compressed.
- Wrist Fracture: A break or crack in one or more of the bones in the wrist. It is often caused by a fall onto an outstretched hand.
- Wrist Sprain: An injury to the ligaments in the wrist, which can occur when the wrist is twisted or bent forcefully.
See Also
External links
- Medical encyclopedia article on Wrist
- Wikipedia's article - Wrist
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