The piriformis is a small, pyramidal muscle that originates on the front of the sacrum and attaches to the top of the thigh bone (femur). Because it bridges the SI joint, its tension level directly affects joint stability:
: Helps rotate the hip and provides "force closure" to keep the SI joint stable. How One Causes the Other Sacroiliac Joint Dysfunction and Piriformis Syn...
: Connects the spine to the pelvis and acts as a shock absorber for the upper body. The piriformis is a small, pyramidal muscle that
