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Your hand and wrist are structured to allow you to move, flex and rotate your wrist joint and to use your hand to grab and touch objects. Your wrist acts like a pivot point that can move in almost any direction as you reach and flex your hand.
Anatomy of the Hand and Wrist: Bones, Muscles, Tendons, Nerves. Last Updated On June 29, 2021 by Dr. Andrew Chung. The wrist links the hand to the forearm. The wrist is a complex system of many small bones (known as the carpal bones) and ligaments. The carpal bones are arranged in 2 interrelated rows.
The bones of the hand and wrist provide the body with support and flexibility to manipulate objects in many different ways. Each hand contains 27 distinct bones that give the hand an incredible range and precision of motion.
Many of the muscles that control the hand start at the elbow or forearm. They run down the forearm and cross the wrist and hand. Some control only the bending or straightening of the wrist. Others influence motion of the fingers or thumb.
The human wrist comprises 8 uniquely-shaped irregular bones arranged in two rows, with the first four in the proximal row and the next four in the distal row. Here are their names: Scaphoid; Lunate; Triquetrum; Pisiform; Trapezium; Trapezoid; Capitate; Hamate
The wrist joint (also known as the radiocarpal joint) is an articulation between the radius and the carpal bones of the hand. It is condyloid-type synovial joint which marks the area of transition between the forearm and the hand.
Learn everything about hand and wrist anatomy using this topic page. Click now to study the bones, muscles, arteries, and nerves of the hand at Kenhub!
The ulnar and radial arteries arch together within the palm of the hand, supplying the front of the hand and fingers. Other arteries travel across the back of the wrist to supply the back of the hand and fingers. Summary. As you can see, the wrist is a complex area of the body.
Hand anatomy consists of bones, muscles, and neurovascular structures that work together. They help us touch, hold, and move objects every day. While intrinsic hand muscles of hand anatomy play a role, forearm muscles also send tendons through the wrist, allowing for a wide range of movements.
1. The carpal bones are 8 irregularly shaped bones distributed into proximal and distal rows. Proximally, they articulate with the radius via the radiocarpal joint, also known as the wrist joint. Distally, they form carpometacarpal joints with the metacarpal bones.