Appreciating the Functions of the Sacroiliac Joints The sacroiliac joints (SIJ) are underappreciated. Although the SIJs are the core structure of the musculoskeletal system, they remain the least understood joints in the body. Here is an overview of the intricate ways in which they function: 1) Weight Transfer The weight of the entire upper body rests on the sacrum. From the sacrum, the weight is transferred through the sacroiliac joints …
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In sports and other physical activities, power comes from a stable foundation. Force transfers from the ground, up the legs to the pelvis, through the sacroiliac joint to the sacrum, and then upward through the spine to the arms. Each joint functions as a link in this kinetic chain. Smooth and efficient power transfer depends on the integrity of each link. When one link is compromised, final output power is …
The sacroiliac joint is where the upper body meets the lower body. It is the center of motion, the center of shock absorption, and the center of power transfer between the upper and lower body. When we talk about core, this is what we are talking about, the sacroiliac joint, not the lumbar spine. Although lumbar disc herniation can lead to extremely severe pain due to pressure on a nerve, …