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ORIGIN Common extensor origin on anterior aspect of lateral epicondyle of humerus. INSERTION Extensor expansion of little finger-usually two tendons which are joined by a slip from extensor digitorum at metacarpophalangeal joint.RIGIN Common extensor origin on anterior aspect of lateral epicondyle of humerus. INSERTION Extensor expansion of little finger-usually two tendons which are joined by a slip from extensor digitorum at metacarpophalangeal joint.
The most common tendon that is involved is the tendon to the extensor carpi radialis brevis, or ECRB. Overuse of this area causes damage to the tendon and results in pain with wrist movement. Tennis elbow is a degeneration of the tendon that attaches the wrist extensor muscles to the elbow.A tendon attaches a muscle to bone. In this case, the ECRB is the muscle, and it attaches to the lateral epicondyle. In cases of overuse, the tendon can degenerate, which cause pain in the area.verview. Lateral epicondylitis, commonly known as âtennis elbowâ is a rather common condition that affects the tendons that arise off the bony prominence on the outside of the elbow, known as the lateral epicondyle. The tendons that come off this area are responsible for allow the wrist and fingers to extend.