Anatomy Of The Finger Tendons

Mallet finger refers to a drooping end joint of a finger. When fingers joints straighten they are being pulled by the extensor tendons.

Ligaments Of The Fingers Hand Orthobullets

Bones muscles tendons nerves.

Anatomy of the finger tendons. 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. The carpal bones are arranged in 2 interrelated rows. 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.

It is common when a ball or other object strikes the tip of the finger or thumb and forcibly bends it. 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. Tendons attached to muscles within the hand and forearm are responsible for the different movements of the fingers.

Tendons allow fingers to pinch grasp grip and straighten. 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. Basic anatomy of the finger.

The flexor digitorum profundus tendon is located under and splits the flexor digitorum superficialis tendon. This happens when an extensor tendon has been cut or torn from the bone figure 2. Flexor tendons nine long tendons which pass from the forearm through the carpal tunnel of the wrist.

Instead it is contained within a single structure the hand. A digit includes the hand bones but these bones are not separated into individual appendages like a finger. The wrist is a complex mechanical system of 8 small bones known as the carpal bones.

Anatomy of the fingers. Anatomy of the hand and wrist. Mri anatomy of flexor tendons.

Just like the flexor digitorum profundus tendons these tendons glide in sheaths along the fingers and the hand. Boutonnière deformity describes the bent down flexed position of the middle joint of the finger. Boutonniere can happen from a cut or tear of the extensor tendon figure 3.

On mri normal flexor tendons have low t1 and low t2 signal. Within the wrist and hand the fds tendons are located superficially volar to the fdp tendons. The wrist links the hand to the arm.

Extensor tendons of the fingers which attach to the middle and distal phalanges and extend the wrist mcp pip and dp joints. Fingers are constructed of ligaments strong supportive tissue connecting bone to bone tendons attachment tissue from muscle to bone and three phalanges bones. One row connects with the ends of the bones in the forearm radius and ulna.

Picture of finger anatomy. They are controlled by muscles in the forearm. And fingers move by the pull of forearm muscles on the tendons.

There are no muscles in the fingers. 4 figure 1 illustrates the basic anatomy of the finger including joints ligaments and tendons. It attaches to the base of the distal phalanx and flexes the dip.

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