Which muscle paralysis can cause ‘Winging of scapula’?

LONG THORACIC NERVE ■ Arises from ventral rami of C5, C6, and C7. ■ Descends behind the brachial plexus on the lateral surface of the serratus anterior, to which it supplies. ■ The serratus anterior muscle can be examined by asking patient to push against a wall with both hands. Winging of scapula will be typically noted