THE ELBOW JOINT

The lateral epicondyle of the humerus is accentuated by the sharp crest presented by its caudal border. Insertion of the needle for puncture is made just caudal to this crest, between it and the ulna. In an alternative method that uses the same landmark the needle is entered at a site 2 or 3 cm proximal to the previous one and is directed mediodistally to pierce the capsule within the olecranon fossa.