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Structure
Intermediate
8 min read

Gluteus medius

It pushes nothing forward. Its work is sideways: stopping the pelvis dropping on the unsupported side, on every step — roughly half the time you spend walking.
3D scene
Gluteus medius in the deep plane
The scene shows it beneath gluteus maximus, on the outer face of the pelvis. Gluteus minimus is merged with it there: the two form a single volume although they are distinct. Without the 3D, the picture fits in one sentence: a fan stretched from the edge of the pelvis to the top of the femur, on the side.
Open in the explorer

Where gluteus medius is

Gluteus medius occupies the outer face of the iliac wing, on the side of the hip. It is largely covered by the gluteus maximus, except in its upper and front part, where it comes close under the skin.
Beneath it lies gluteus minimus, deeper, with a very similar path and action. The two work together closely enough that they are often described as one functional unit.

Origin

It arises from the outer face of the iliac wing, over a broad surface between the iliac crest above and the gluteal lines.

Insertion

Its fibres converge downwards and attach to the outer face of the greater trochanter, the bony prominence you can feel on the side of the hip.

Nerve supply and palpable landmarks

The nerve supply comes from the superior gluteal nerve, from the L4 to S1 roots. The muscle can be felt between the iliac crest and the greater trochanter; it tightens clearly under the fingers when you stand on one leg.

What gluteus medius does

Its name files it among the glutes, which is misleading: it barely takes part in hip extension, which is the work of gluteus maximus.
  • Hip abduction: it takes the thigh away from the midline, or stops it coming closer.
  • Controlling the pelvis in single-leg stance: this is its main function, and it works as restraint.
  • Rotation: its front fibres turn the thigh inwards, its rear fibres outwards.
Single-leg stance
The phase where the whole body weight rests on one foot. It occupies a large share of the walking cycle, and the pelvis then tends to drop on the side that no longer has support.
unipedal support

The work that really counts

On every step, the body passes through a phase where only one foot touches the ground. Body weight then applies at a distance from that support, and the pelvis tends to drop on the free side.
The gluteus medius on the standing side holds back that drop. It produces no movement: it prevents one. The same logic applies to the hip adductors, which pull the other way — together they form the pair that holds the pelvis in the frontal plane.
Certainty level · Established
Gluteus medius controls the frontal-plane drop of the pelvis during single-leg stance.
Descriptive anatomy gives the line of action, and the kinesiology of walking describes the restraining mechanism. The force required exceeds body weight, the support being offset from the centre of gravity; calculated values vary with the models used.
Standring S (2020) · Neumann DA (2016)

The movements it takes part in

It works in every reduced-base position. In the lunge, it is what stops the pelvis giving way on the side of the back leg. In the loaded carry, it holds the pelvis on every step under a load that amplifies the drop.
Above all, like the iliopsoas and tibialis anterior, it is a muscle of walking: loaded on every stride, far more than in any exercise.

Synergists

  • Gluteus minimus, lying beneath it, has a very similar path and action.
  • Tensor fasciae latae contributes to abduction and to sideways stabilisation.
  • The upper fibres of gluteus maximus contribute to abduction.

Antagonists

Seeing gluteus medius

Gluteus medius in the deep plane

The scene shows it beneath gluteus maximus, on the outer face of the pelvis. Gluteus minimus is merged with it there: the two form a single volume although they are distinct. Without the 3D, the picture fits in one sentence: a fan stretched from the edge of the pelvis to the top of the femur, on the side.
Current step
Deep and medial muscles
Beneath the visible groups work muscles no silhouette shows. The rotator cuff holds the head of the humerus against the shoulder blade, serratus anterior keeps the shoulder blade flat on the ribcage, the iliopsoas links the lumbar spine to the femur, and the adductors fill the inner thigh. Deeper still, the diaphragm closes the trunk as a dome, inside the ribs. They orient and stabilise more than they move.
Scene description
A three-dimensional diagram of a standing human body, arms by the sides, built from simplified paper-coloured volumes. Twelve priority muscle groups are laid over this outline in terracotta: at the front, pectoralis major, the deltoid, biceps brachii, the abdominal wall and the quadriceps; at the back, the trapezius, latissimus dorsi, the erector spinae, triceps brachii, the glutes, the hamstrings and the calves. A simplified skeleton — skull, spine, ribcage, pelvis, humerus, femur and tibia — can be shown beneath the outline to reveal the bony levers these muscles pull on. Each group is selectable and opens its own reference page. This is a teaching diagram with stylised volumes, not an exact anatomical reconstruction.
Visible structures
  • Pectoralis major
    A thick sheet running from the clavicle, the sternum and the upper costal cartilages to the lateral lip of the bicipital groove of the humerus. It draws the arm towards the midline and forwards, and drives horizontal pushing.
  • Deltoids
    Three heads — anterior, lateral and posterior — running from the clavicle, the acromion and the spine of the scapula to the deltoid tuberosity of the humerus. Together they raise the arm; separately they carry it forwards, out to the side or backwards.
  • Biceps brachii
    Two heads arising from the scapula — the supraglenoid tubercle and the coracoid process — joining on the radial tuberosity. It flexes the elbow and supinates the forearm, and contributes to every pulling movement.
  • Abdominal wall
    Rectus abdominis, the external and internal obliques and transversus, running from the ribs and sternum to the pubis and iliac crest. They flex and rotate the trunk and, above all, stabilise the spine by regulating intra-abdominal pressure.
  • Quadriceps
    Four heads — rectus femoris, vastus lateralis, vastus medialis and vastus intermedius — joining through the quadriceps tendon onto the patella and then the tibial tuberosity. They extend the knee, and rectus femoris also flexes the hip.
  • Trapezius
    A diamond-shaped muscle spanning from the occiput and the cervical and thoracic spinous processes to the clavicle, the acromion and the spine of the scapula. Its upper, middle and lower portions elevate, retract and depress the scapula.
  • Latissimus dorsi
    A broad fan arising from the lower thoracic vertebrae, the thoracolumbar fascia, the iliac crest and the lowest ribs, converging on the bicipital groove of the humerus. It pulls the arm down and back, and drives vertical pulling.
  • Erector spinae
    Muscular columns — iliocostalis, longissimus and spinalis — running from the sacrum and iliac crest to the ribs, the vertebrae and the skull, on either side of the spinous processes. They extend the spine and control the trunk as it lowers.
  • Triceps brachii
    Three heads — long, lateral and medial — arising from the scapula and the back of the humerus and joining on the olecranon of the ulna. It extends the elbow, and its long head also assists shoulder extension.
  • Glutes
    Gluteus maximus, medius and minimus, arising from the iliac wing and the sacrum and inserting on the femur and the iliotibial tract. They extend, abduct and rotate the hip, and drive the pelvis upright in the hinge and the squat.
  • Hamstrings
    Biceps femoris, semitendinosus and semimembranosus, running from the ischial tuberosity to the tibia and fibula. They extend the hip and flex the knee, and control the trunk as it lowers in the hip hinge.
  • Calves
    The gastrocnemius and soleus, joining through the Achilles tendon onto the calcaneus. They plantarflex the ankle, and the gastrocnemius, which crosses the knee, also assists knee flexion.
  • Rotator cuff
    Four short muscles running from the shoulder blade to the top of the humerus. Their tendons merge into a sheet that holds the head of the bone against its socket while the deltoid moves the arm.
  • Serratus anterior
    A sheet hooked onto the upper ribs by triangular slips, passing under the shoulder blade and attaching to its inner border. It holds the blade against the ribcage and rotates it.
  • Iliopsoas
    The only muscle linking the lumbar spine directly to the femur. It descends from the vertebrae and the iliac fossa, curves around the rim of the pelvis and attaches to the lesser trochanter.
  • Hip adductors
    Five muscles running from the pubis to the back of the femur in overlapping layers. They draw the thigh towards the midline and control the pelvis in single-leg stance.
  • Forearm muscles
    Masses gathered near the elbow, continued by long tendons to the wrist and fingers. They drive the hand from a distance and carry grip strength.
  • Tibialis anterior
    A muscle pressed against the outer surface of the tibia, its tendon swinging towards the inside of the foot. It lifts the toes on every step and brakes the forefoot after heel strike.
  • Diaphragm
    A muscular dome running from the lower border of the ribs, the sternum and the lumbar vertebrae to a central tendon. As it contracts it descends, the chest gains volume and air enters: it is the engine of quiet breathing, and the ceiling of the abdominal cavity.
Guided steps
  • 1/5
    The front of the body. Pectoralis major covers the upper chest, the deltoid caps the shoulder, the biceps fills the front of the arm, the abdominal wall links the ribs to the pelvis, and the quadriceps fills the front of the thigh. Further out on the limbs, the forearm muscles drive the wrist and hand, and tibialis anterior lifts the foot.
  • 2/5
    The back of the body. The trapezius links the neck to the shoulder blades, the latissimus dorsi fans down to the pelvis, the erector spinae flank the spine, and the triceps fills the back of the arm. Glutes, hamstrings and calves form the posterior chain from hip to ankle.
  • 3/5
    Beneath the visible groups work muscles no silhouette shows. The rotator cuff holds the head of the humerus against the shoulder blade, serratus anterior keeps the shoulder blade flat on the ribcage, the iliopsoas links the lumbar spine to the femur, and the adductors fill the inner thigh. Deeper still, the diaphragm closes the trunk as a dome, inside the ribs. They orient and stabilise more than they move.
  • 4/5
    In a push, force starts at the ground, travels through the quadriceps and the abdominal wall, and then pectoralis major, the anterior deltoid and the triceps drive the load away from the trunk. The skeleton acts as the lever: no group works alone, and the quality of the movement comes from their sequencing.
  • 5/5
    In a pull, the latissimus dorsi and trapezius bring the arm and shoulder blade towards the trunk while the biceps flexes the elbow. Glutes, hamstrings and erector spinae hold the pelvis and spine so that force transfers without the trunk collapsing.
Model licence · Z-Anatomy et BodyParts3D — CC-BY-SA 4.0

What the model simplifies

Limit
Two muscles shown as one
Gluteus medius and minimus are extracted together and rendered as a single volume. They are indeed two stacked muscles whose respective shares cannot be told apart here.
The bursae separating them from the greater trochanter are not represented. They nonetheless account for part of the pain felt on the side of the hip, and an anatomy page cannot attribute anything to them.

Sources

Main sources

  • Standring S (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice, 42nd edition. Elsevier.
  • Neumann DA (2016). Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation, 3rd edition. Elsevier.
Put it into practice in Shapier

Train hip abduction with the clamshell

Training hip abduction with the clamshell happens in Shapier; Body Lab only explains why this movement matters.
Train hip abduction with the clamshell
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Check my understanding

What is the main function of gluteus medius?
How does gluteus medius act on thigh rotation?
When is gluteus medius worked the most?
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Read next

  • Tensor fasciae latae
    A short muscle that attaches not to a bone but to a fibrous band. That band runs down to the tibia and carries its pull along the whole length of the thigh.
    With a 3D scene
  • Hip adductors
    Five muscles fill the inner thigh and draw the leg back towards the midline. Most of their work is stabilising, on every step taken on one leg.
    With a 3D scene
  • The hip
    A sphere set deep in a socket, locked by three ligaments that tighten in extension. That is what makes standing possible without continuous muscular effort.
    With a 3D scene

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Trust and method

Author
equipe-editoriale-shapier
Editorial review
Thanh Chau
Scientific review
Pending
Published on
August 2, 2026
Reviewed on August 2, 2026
Next review due August 2, 2027
Limits of this page
  • Gluteus minimus, lying beneath, is extracted with it in the scene: the two form a single volume although they are distinct muscles.
  • The bursae separating these muscles from the greater trochanter are not represented, although they account for part of the pain felt on the side of the hip.
  • This page describes an anatomy. Pain on the side of the hip, a limp, or instability when walking belong to a health professional.
Sources
  • Standring S (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice, 42nd edition. Elsevier.
  • Neumann DA (2016). Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation, 3rd edition. Elsevier.
Educational content. Body Lab does not diagnose and does not replace professional advice.
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