In Plain English
The gluteus maximus is the large muscle that forms the bulk of the buttocks. It extends the hip, rotates the leg outward, and helps generate force whenever you stand up, climb, sprint, or jump.
Technical Definition
The gluteus maximus is the largest and most superficial muscle of the gluteal region. It originates from the posterior ilium, sacrum, and coccyx before inserting into the iliotibial tract and gluteal tuberosity of the femur. It is the primary hip extensor and also contributes to external rotation and upper-fiber hip abduction.



















