Muscle spared in ERB's palsy?: (A) Deltoid, (B) Brachialis, (C) Biceps, (D) Coracobrachilis
Answer is D. Root value involved in ERB's palsy is C5 and C6 which gives supply to Axillary nerve & Musculocutaneous nerve.Coracobrachialis is supplied by C7 and hence spared.