The sacroiliac joint (SIJ) plays a crucial role in connecting the spine to the pelvis, yet its movements and mechanics remain a topic of debate and investigation. Pedersen's 1991 literature review offers a comprehensive look at the research available at the time, shedding light on how this joint functions and why understanding its motion matters. This post unpacks key findings from Pedersen’s review, helping readers grasp the complexities of the SIJ and its impact on movement