Epicondylar markers could be placed either manually or automatically by a computer algorithm that selected the most lateral or most medial osseous prominence of the distal part of the humerus.
When she pushes herself up, her pectoralis major is contracting, pulling its insertion point — which in this case is the top of her humerus — toward the immobile origin, which is her sternum.
But they did have two enlarged muscle attachment areas - one on their humerus and one on their ulna - that are similar to what we see in digging mammals today.
But when your ulnar nerve reaches your elbow, it runs beneath the bony bump at the bottom of your humerus, named the medial epicondyle, and it passes through a tunnel of ligament and muscle tissue called the cubital tunnel.