Winging of scapula is due to paralysis of
WINGING OF SCAPULA: Paralysis of serratus anterior causes 'winging of scapula' It is supplied by the long thoracic nerve. FEATURES: Medial border of the scapula becomes unduly prominent The inferior angle becomes prominent. The arm cannot be abducted beyond 90degree. REF: BD Chaurasia 7th edition page no: 12.
Pectoralis major
Serratus anterior
Pectoralis minor
Latissimus dorsi
Upper limb