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

Gastric irritation is a common condition that can cause discomfort and pain in the stomach area. What many people might not realize is that this irritation can also affect the movement of the spine, particularly the thoracic and lumbar regions. A study by Sheasby A, titled Effect of gastric irritation on thoracic-lumbar rotation (AECC Project List 1997), explores this connection and sheds light on how internal digestive issues can influence spinal mobility. How Gastric Irrit

Insights from Indahl et al. (1999) The sacroiliac (SI) joint is often discussed as a source of low back pain — but does it also play an active role in neuromuscular control? A pivotal animal study by Indahl, Kaigle, Reikeras, and Holm, published in the Journal of Spinal Disorders , investigated whether stimulation of the sacroiliac joint could trigger muscular activation in the trunk and hip. Their findings suggest the SI joint is not just a passive structure — it may be part