Is the Pubis a joint?
Patients understand what a joint is because it is a fairly straight-forward concept. A ball and socket joint and a hinge joint are the two most common joints in the body. The pubis is not a joint. True there is a Pubic Symphysis, where the two bones of the pelvis come together in the center of the body, but there is no significant movement here to represent a true joint. My description to patients is more that of a “pulley system.” The pubis represents a central structure on the body that powerful forces created by tendons, ligaments and muscles, are using to create movements between the upper body and the lower extremities. Just the act of walking is impossible without the pubis acting as a pulley to swing the leg from back to front. If this structure is unstable, normal movements become difficult or painful. The “pulley,” so to speak, has been pulled off the wall