When the Bottom Ribs Aren't Attached to the Breastbone Medically reviewed by Jane Kim, MD Floating ribs are a normal part of human anatomy, but like other ribs, they can be injured and cause pain.

An uneven rib cage means the sides of the rib cage are not symmetrical. There are several causes of uneven ribs, including scoliosis and Poland syndrome. Alternatively, a person born with an uneven ...