Winging of scapula is due to paralysis of:: (A) Nerve to trapezius, (B) Nerve to serratus anterior, (C) Nerve to latissimus dorsi, (D) Nerve to pectoralis major
Answer is B. Ans. B Nerve to serratus anteriorRef: Gray's Anatomy 41st ed. P 819* Winging of scapula is due to paralysis of serratus anterior muscle.* Nerve supplying serratus anterior muscle: Long thoracic nerve (C5, 6, 7). Therefore long thoracic nerve palsy can also lead to winging of scapula.* Vascular supply: Serratus anterior is supplied by superior and lateral thoracic arteries, and by branches from the thoracodorsal artery after it divides in latissimus dorsi.