
Over the past 30 years, I have researched the literature on the sacroiliac joint (SIJ) and matched it to what I found in my patients. In the early 1990s, the keystone concept of form and force closure was introduced by a group of physiotherapists in Europe[1]. They came upon an idea after finding that “A commercial device used in painting ceilings helped us to conceive the concept of the SIJ …