Search results
Results from the WOW.Com Content Network
Tendons link your muscles to your bones. They’re like strong, flexible ropes. Your hand and wrist have two groups of tendons: Extensor tendons: Tendons that help you extend and straighten your fingers, hand and wrist. Flexor tendons: Tendons that help you flex and curl your fingers, hand and wrist.
Tendons are fibrous cords, similar to a rope, and are made of collagen. They have blood vessels and cells to maintain tendon health and repair injured tendon. Tendons are attached to muscles and to bone.
The flexor pulley system of the hand is a complex structure that co-ordinates flexion of the digits. It consists of: Long flexor tendons – and their associated synovial sheaths. Annular pulleys – 5 associated with each finger, 2 associated with the thumb. Cruciate pulleys – 3 associated with each finger.
The anatomy of the hand is incomplete without understanding the wrist. This complex structure connects the entire hand to the radius and ulna, facilitates the passage of tendons together with the above mentioned neurovascular structures from the forearm to the hand, and permits us to exploit all its movements. Those are flexion, extension ...
The extensor tendon compartments of the wrist are six tunnels which transmit the long extensor tendons from the forearm into the hand. They are located on the posterior aspect of the wrist. Each tunnel is lined internally by a synovial sheath and separated from one another by fibrous septa.
See anatomy pictures of the 27 bones in the hand and wrist, how they are connected with tendons and muscles and the nerves that run through the skeletal structure.
The tendons that allow each finger joint to straighten are called the extensor tendons. The extensor tendons of the fingers begin as muscles that arise from the backside of the forearm bones. These muscles travel towards the hand, where they eventually connect to the extensor tendons before crossing over the back of the wrist joint.
The tendons connect muscles in the arm or hand to the bone to allow movement and typically pass through the sheaths. In addition, there are arteries, veins, and nerves within the hand that provide blood flow and sensation to the hand and fingers.
This article discusses the key anatomical structures of the hand that enable functional movements, including the bony structures, articulations, ligaments, muscles, nerves and the vascular supply. This is a course page funded by Plus online learning.
Intrinsic hand muscles: Lumbrical muscles: FDP tendons—first and second lumbricals are unipennate and arise on radial side of tendon; third and fourth lumbricals are bipennate and arise from adjacent tendons: Radial side of the extensor hood at the level of the proximal phalanx