Winging of scapula is due to paralysis of:
Nerve to trapezius
Nerve to serratus anterior
Nerve to latissimus dorsi
Nerve to pectoralis major
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.
Upper Extremity