C-5 Motor–Biceps

Elbow flexion

Biceps brachii

With the patient seated the elbow is flexed in a supinated position. Push down to extend the elbow as the patient resists with biceps activity.

Grade 5 strength. The examiner is unable to break the biceps strength.

The biceps brachii is innervated by the musculocutaneous nerve (C5-C6). If C5 innervation is intact, muscle strength should be at least 3/5.

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Figures

Last Updated on June 27, 2024

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