Anatomy Of The Finger Tendons

Flexor tendons nine long tendons which pass from the forearm through the carpal tunnel of the wrist. Mallet finger refers to a drooping end joint of a finger.

Biology And Anatomy Of Flexor Tendon

Fingers are constructed of ligaments strong supportive tissue connecting bone to bone tendons attachment tissue from muscle to bone and three phalanges bones.

Anatomy of the finger tendons. 4 figure 1 illustrates the basic anatomy of the finger including joints ligaments and tendons. Tendons attached to muscles within the hand and forearm are responsible for the different movements of the fingers. This happens when an extensor tendon has been cut or torn from the bone figure 2.

And fingers move by the pull of forearm muscles on the tendons. Within the wrist and hand the fds tendons are located superficially volar to the fdp tendons. The wrist is a complex mechanical system of 8 small bones known as the carpal bones.

When fingers joints straighten they are being pulled by the extensor tendons. The flexor digitorum profundus tendon is located under and splits the flexor digitorum superficialis tendon. Tendons allow fingers to pinch grasp grip and straighten.

Basic anatomy of the finger. Instead it is contained within a single structure the hand. It attaches to the base of the distal phalanx and flexes the dip.

Boutonniere can happen from a cut or tear of the extensor tendon figure 3. Just like the flexor digitorum profundus tendons these tendons glide in sheaths along the fingers and the hand. It is common when a ball or other object strikes the tip of the finger or thumb and forcibly bends it.

Within the fingers the fds tendons split at the level of the mid diaphysis of the proximal phalanges to allow the fdp tendons to pass superficially. On mri normal flexor tendons have low t1 and low t2 signal. One row connects with the ends of the bones in the forearm radius and ulna.

They diverge in the palm where two go to each finger one attaches at the dp and one at the mcp and one goes to the thumb. Mri anatomy of flexor tendons. The wrist links the hand to the arm.

Anatomy of the hand and wrist. Extensor tendons of the fingers which attach to the middle and distal phalanges and extend the wrist mcp pip and dp joints. Extensor tendons connect to muscles in the middle of the forearm then extend through the wrist and hand to each finger where they form the extensor hood.

Boutonnière deformity describes the bent down flexed position of the middle joint of the finger. They are controlled by muscles in the forearm. The carpal bones are arranged in 2 interrelated rows.

At the level of the fingers each tendon splits into 2 separate cords and then insert into the middle bone of the finger on either side of the flexor digitorum profundus tendon that runs farther down the finger. There are no muscles in the fingers. Anatomy of the fingers.

Bones muscles tendons nerves. Picture of finger anatomy. A digit includes the hand bones but these bones are not separated into individual appendages like a finger.

Trigger Finger