What is the Piriformis?
The piriformis is a small, deep muscle in your butt area that sits underneath the larger glute muscles. It starts on the front of your lower spine and sacrum (the bony area at the base of your spine) and attaches to the top of your thigh bone. Its main job is to help control your hip. When your leg is straight, it helps rotate your thigh outward. When your hip is bent, it helps move your thigh outward to the side and supports hip stability. It also plays a role in keeping your pelvis steady when you walk, run, squat, or change direction.