The obturator internus is a muscle that runs from each hip and attaches to the pelvic floor muscles (levator ani) through a tendon known as the ATLA (arcuate tendon levator ani). The obturator internus can be a contributor to symptoms of pelvic organ prolapse, pelvic pain, sit bone pain, hamstring pain, hip pain, bladder pain, tailbone pain, pelvic floor dysfunction and more. Its function is to rotate the hip laterally, or outward, and provides support through lifting the pe