Name of test

Wrist flexion

What it tests

Flexor carpi radialis

How to do it

With the patient seated and fingers extended, flex the wrist. Push down on the palm as the patient resists with flexor carpi radialis activity.

The normal response

Grade 5 strength. The examiner is able to break flexor carpi radialis strength only with considerable difficulty.

What it means if not normal


The flexor carpi radialis muscle is innervated by the median nerve (C6-C7).

The patient’s fingers are in extension to eliminate wrist flexor activity generated by the finger flexor muscles.


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