How do you tell a right humerus from a left humerus?

On the right humerus you’ll see that on the medial side (the side that faces your body) will have the bony landmark near the elbow joint that people often hurt and say they’ve hurt their funny bone. This landmark is on the left side of the right humerus and right side of the left humerus. If you need further explanation, feel free to drop me a message.