The radial nerve is the afferent pathway and the median nerve is the efferent pathway. The spinal root is C5-6.
The sitting patient
- Starting position, refer to BTR.
- Use the reflex hammer to strike about 1 cm above the radial styloid process [Figure 81].
- Note the contraction of the brachioradialis muscle and the movement of the forearm.
Figure 81
The supine patient
- The patient’s forearm should be supported by the underlying surface.
- Take hold of the patient’s index finger (and middle finger) in one hand and shake the patient’s forearm and wrist until these are relaxed.
- Use the reflex hammer to strike about 1 cm above the radial styloid process [82].
- Note the contraction of the brachioradialis muscle and the movement of the forearm.
Figure 82
