True sciatica can also be a result when the piriformis muscle is attempting to protect the sacroiliac joint and subsequently compresses down on the sciatic nerve resulting in sciatic pain.

Piriformis syndrome can begin for a variety of reasons, however one of the most common is the subluxation of the sacroiliac joint. When the sacroiliac joint becomes malpositioned, the piriformis ...

But its bigger job, especially in cycling, is stabilization. “The piriformis stabilizes the hip joint and the sacroiliac ...