What is scapula winging and how do you fix it? Scapula winging is when your scapula doesn’t lay on your ribcage flat and rotate like it should. It come off of your rib cage and sticks out like a wing. The problem is weak #serratus anterior, more middle traps are weak as well. You fix this problem by strengthening your serratus anterior and middle traps. The exercise I am doing is called a push-up plus without the push-up. The serratus anterior is attached under the scapula ( shoulder blade) and