Hip · Skeletal muscle
Gluteus Maximus (Buttock Muscle)
The gluteus maximus is the large muscle of the buttock and the biggest muscle in the body. It powers standing up, climbing and running by extending the hip.
What it is
The gluteus maximus is the large, powerful muscle forming the bulk of the buttock, with smaller gluteal muscles beneath.
Where it is
The buttock, over the back of the pelvis and hip.
What it does
Extends the hip (drives the thigh backwards) and helps keep the trunk upright; assists in rotating the hip.
Everyday use
Standing up from sitting, climbing stairs, running and jumping all rely on the glutes.
When things go wrong
Common problems affecting the gluteus maximus (buttock muscle)
- Gluteal weakness (linked to hip, knee and back problems)
- Muscle strain
- Bursitis around the hip
Education and reference only. This explains the anatomy in plain terms and is not a diagnosis. Sudden severe symptoms — such as crushing chest pain or collapse — are an emergency; call 999.
Looking after it
Keeping it healthy
Strong glutes support the hips, knees and lower back; strengthening exercises help posture and reduce injury risk.
Did you know?
An interesting fact
The gluteus maximus is the single largest muscle in the human body.
Answers
Gluteus Maximus (Buttock Muscle): frequently asked questions
What does the gluteus maximus do?
It is the large buttock muscle that extends the hip, powering standing up, climbing stairs, running and jumping.
Sources
Where this is drawn from
- NHS — Muscles and movement
- Gray's Anatomy for Students
- TeachMeAnatomy — muscular system
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