Gluteus Maximus

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.