Brachioradialis tendon reflex

Definition:
The Brachioradialis tendon reflex occurs when this tendon is struck by a reflex-hammer, and is characterised by the contraction of this muscle thus flexing the elbow.

Test procedure:
With the patient seated or supine, the examiner locates the tendon of the Brachioradialis muscle and covers it with their thumb. After which, the examiner strikes the tendon through their thumb to elicit the reflex.

Test findings (Positive & Negative results):
A positive finding is characterised by the smooth, rapid contraction of the Brachiradialis muscle after it’s tendon has been struck followed by a return to the normal resting tone of that muscle.
When performing this reflex, look out for signs of upper or lower motor neurone lesions.

Considerations:
This reflex is used to examine the integrity of the C6 nerve root.