Deep, transverse friction
- The patient sits with the arm resting on the couch.
- The elbow is placed in a 90° flexion position and
in full supination
- The examiner sits next to the patient, holds the
patient's elbow with his contralateral hand and palpates the epicondyle with his thumb..
- The sharp lateral margin of the humerus is felt quite easily.
- The thumb is now turned over 90° and pushed in a dorsal direction against the tendon of the extensor carpi radialis longus.
- (The extensor carpi radialis longus takes its origin at the front of the margin and is not to be palpated from lateral.
- The fingers apply counter pressure on the medial side of the elbow..
- Friction is imparted by an up-and-down movement of the entire hand, resulting in a movement of the thumb parallel to the axis of the humerus.
- The active phase is a supination of the wrist. During
the passive phase the thumb moves downwards again.