Together these combined tendons extend the fingers at the three finger joints. The tendons that run down our fingers are held in place by a series of ligaments called pulleys that form stable arches over tendons forming a tunnel like sheath.
The extensor digiti minimi straightens the small finger.
Finger anatomy tendons. It attaches to the base of the distal phalanx and flexes the dip. Basic anatomy of the finger. When muscles contract they pull on the tendons to move the bones.
In the finger the ends of other tendons that start in the hand join with them to make the fingers move. The most frequent distribution pattern includes a single extensor indicis tendon located ulnar to the extensor digitorum tendon of the index finger in the mcp joint a single thick extensor digitorum tendon for the middle finger a double extensor digitorum tendon for the ring finger no extensor digitorum tendon for the little finger and a double extensor digiti minimi tendon for the little finger. Tendons are white flexible rope like cords at the ends of muscles that attach muscles to bone.
A flexor tendon injury can cause loss of flexion. Extensor tendons are just under the skin. 4 figure 1 illustrates the basic anatomy of the finger including joints ligaments and tendons.
The ability to flex the fingers consists of a system of flexor muscles in the forearm and their tendons are inserted into the bones of the fingers. If not treated it may be hard to straighten one or more joints. They can be injured by a minor cut or jamming a finger which may cause the thin tendons to rip from their attachment to bone.
The four tendons then continue along the back of the hand and onto each finger. They lie next to the bone on the back of the hands and fingers and straighten the wrist fingers and thumb figure 1. The flexor digitorum profundus tendon is located under and splits the flexor digitorum superficialis tendon.
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