Symbol Thigh Bone Metal Sign

About the Thigh Bone design

One long bone runs corner to corner across the sign, the shaft drawn as two parallel edges with a narrow gap down the center so it looks like a hollow tube instead of a solid rod. Each end splits into a pair of fat rounded knobs, much wider than the shaft they cap. Only the upper right knob carries an opening of its own, a tilted capsule angled along the bone, while the other three stay solid.