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 1
The superficial muscles of the gluteal region. The gluteus maximus and medius have been partly removed.