MusclePelvic floor
Coccygeus
Latin: M. coccygeus
Location: Pelvis
View the coccygeus in 3DOrigin
Ischial spine and sacrospinous ligament.
Insertion
Lateral border of the sacrum and coccyx.
Action
Draws the coccyx forward and completes the pelvic diaphragm's posterior wall.
Nerve supply
S4–S5 branches.
Blood supply
Inferior gluteal artery.
Clinical relevance
With the levator ani it closes the pelvic outlet; sacrospinous ligament fixation sutures pass through its ligament in prolapse surgery.
Educational anatomy reference, not medical advice. About this content.