Winging of scapula is due to which of these conditions?: (A) Long thoracic nerve palsy, (B) Thoraco-dorsal nerve palsy, (C) Erb's palsy, (D) Klumpke's palsy
Answer is A. Winging of scapula is due to the paralysis of Serratus anterior muscle which is supplied by long thoracic nerve . Long thoraic nerve damage causes paralysis of Serratus muscle. FEATURES: 1)Medial border of the bone becomes unduly prominent 2)Arm cannot be abducted 90 degrees. REF:B D Chaurasia 7th edition Page no: 45. Figure :3.9,page no:38-Vishram Singh - upper limb& thorax, 2nd edition