The gluteus maximus is a muscle of the gluteal region in the lower limb. It the largest and most superficial gluteal muscle. Attachments: Originates from the gluteal (posterior) surface of the ilium, sacrum and coccyx. The fibres slope across the buttock at a 45 degree angle and insert onto the iliotibial tract and gluteal tuberosity of the femur. Actions: Thigh extension. It also assists with lateral rotation of the lower limb. Innervation: Inferior gluteal nerve. Blood Supply: Superior and inferior gluteal arteries By TeachMeSeries Ltd (2025) Fig 1The superficial muscles of the gluteal region. The gluteus maximus and medius have been partly removed. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Print Article Rate This Article