Hand Anatomy Flexors
Flexor tendon anatomy can be best understood by individual structures or zones of the hand.
Hand anatomy flexors. Flexor tendon and muscles anatomy mnemonic. These tendons run closer to the bone compared to the rest of the flexors in the hand and fingers.
Cruciate pulleys 3 associated with each finger. Hence a proximal injury will remove innervation to the forearm muscles and the hand muscles.
Oblique pulley 1 associated with the thumb. Long flexor tendons and their associated synovial sheaths.
The flexor retinaculum is a strong fibrous band that covers the carpal bones on the palmar side of the hand near the wrist. Dorsiflexion of the hand is a confusing term and so is rarely used.
The dorsum of the hand is the posterior surface and so movement in that direction is extension. Where do i get my information from.
Extrinsic originate in forearm wrist flexors and extensors. Metacarpal phalangeal joint flexion.
Flexor digitorum profundus fdp flexor digitorum superficialis fds and flexor pollicis longus fpl. Hence the still functioning finger flexors give the patient a clawed appearance in the ring and little finger.
They are powered by a common muscle belly shared by all the fingers. These images are a random sampling from a bing search on the term hand anatomy click on the image or right click to open the source website in a new browser window.
The flexor carpi radialis and flexor carpi ulnaris stretch from the humerus upper arm bone along the inside of the forearm to the metacarpal bones of the hand and flex the wrist. Annular pulleys 5 associated with each finger 2 associated with the thumb.
Flexor muscle any of the muscles that decrease the angle between bones on two sides of a joint as in bending the elbow or knee. Learn more about flexor tendon injuries.
In relation to individual structures there is a simple flexor tendon anatomy mnemonic the rule of 3 2 1. Several of the muscles of the hands and feet are named for this function.
Dorsiflexion refers to flexion at the ankle so that the foot points more superiorly. Anatomy hand arthritis hand arthritis in general hand basal thumb arthritis hand fractures hand instability hand dislocation hand.
Flexor tendon injury hand mallet finger injury hand skier s thumb hand thumb extensor tendon epl rupture hand general procedures. Flexor digitorum superficialis fds tendons fds tendons help bend the index middle ring and small fingers at the middle finger joint.
The flexor pulley system of the hand is a complex structure that co ordinates flexion of the digits. It attaches to the bones near the radius and ulna on the ulnar side the flexor retinaculum attaches to the pisiform bone and the hook of the hamate bone on the radial side it attaches to the tubercle of the scaphoid bone and to the medial part of the palmar.
With a proximal injury leading to an open palm there is more capacity for hand function.
