Patient Positioning
Patient seated facing the examiner with extended arm, palm up. The arm is resting comfortably on the examination table. Placing a pillow under the elbow leads to full extension of the joint.
Probe Positioning
Place the transducer on a medial transverse plane over the distal humerus. Start scanning approximately 5 cm above the joint and move the probe distally.
rn: radial nerve
mn: median nerve
Note: The brachial artery is easily located due to its arterial pulse, the median nerve lies medially to it. The radial nerve lies between the brachioradialis and brachialis muscle. Both nerves can be followed distally – the median nerve to the wrist and the radial nerve to its bifurcation (superficial sensory branch and posterior interosseous nerve).