Supporting the Sacroiliac Joint with Rigid Tape Jess McDonald Sports Physiotherapist – MOVE Sports Physiotherapy & Pilates Geelong Pain in the Sacroiliac Joint (SIJ) is a common cause of lower back discomfort, especially in people who spend long hours sitting, lifting, running, or returning to exercise after pregnancy. For some clients, the SIJ can feel unstable, irritated, or “locked,” especially during bending, walking, or transitioning from sitting to standing. Rigid SIJ