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Palpation of the radial extensors of the wrist

The muscles are now relaxed. Bring the subject’s forearm into supination and ask him to do a combined active movement of extension and radial deviation of the wrist. Just distal to the
origin of the brachioradialis muscle.

– between this muscle and the lateral epicondyle
-the contraction of the extensor carpi radialis longus can be seen.

By pressing in the posterior direction, its origin can be palpated, again
at the anterior aspect of the humerus.Go more distally and palpate now the anterior aspect of the lateral epicondyle.A flat tendinous
structure is recognized which is the origin of the extensor carpi radialis brevis muscle.

Bring the subject’S elbow into more extension (130-135°) and into pronation. Over the head of the radius the tendons of wrist and finger extensors can be palpated.

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