{"schemaVersion":1,"id":"en-anatomy-tibialis-anterior","type":"anatomy","pillar":"body","locale":"en","translationGroupId":"anatomy-tibialis-anterior","slugPath":"body/muscles/tibialis-anterior","title":"Tibialis anterior","shortTitle":"Tibialis","summary":"Tibialis anterior runs down the front of the shin and lifts the foot. Quiet under load, it works on every step to keep the toes from dragging on the ground.","level":"beginner","estimatedMinutes":7,"synonyms":["tibialis anterior","shin muscle","foot dorsiflexor","ankle dorsiflexion"],"blocks":[{"id":"b1","type":"heading","level":2,"text":"Where tibialis anterior is","anchor":"where-tibialis-anterior-is"},{"id":"b2","type":"paragraph","content":[{"kind":"text","value":"Tibialis anterior occupies the front of the shin, right beside the crest of the tibia. It is the muscle you feel harden under your fingers when you pull your toes up, on the outer edge of the bone."}]},{"id":"b3","type":"paragraph","content":[{"kind":"text","value":"It is superficial along its whole length, which makes it easy to find — a rare thing for a muscle on this page. Its tendon becomes very visible at the ankle when the foot lifts, stretched diagonally towards the inner side of the instep."}]},{"id":"b4","type":"heading","level":3,"text":"Origin","anchor":"origin"},{"id":"b5","type":"paragraph","content":[{"kind":"text","value":"It arises from the lateral condyle and the upper two thirds of the outer surface of the tibia, and from the interosseous membrane linking the tibia to the fibula."}]},{"id":"b6","type":"heading","level":3,"text":"Insertion","anchor":"insertion"},{"id":"b7","type":"paragraph","content":[{"kind":"text","value":"The belly continues into a long tendon that runs down in front of the ankle, passes under a transverse fibrous band and swings towards the inside of the foot. It attaches to the first cuneiform and the base of the first metatarsal — at the root of the big toe, on the inner side of the sole."}]},{"id":"b8","type":"heading","level":3,"text":"Nerve supply and palpable landmarks","anchor":"nerve-supply-and-palpable-landmarks"},{"id":"b9","type":"paragraph","content":[{"kind":"text","value":"The nerve supply comes from the deep fibular nerve, from the L4 and L5 roots. The muscle can be felt along the whole outer surface of the tibia; its tendon is easy to find on top of the foot by pulling the toes towards you."}]},{"id":"b10","type":"heading","level":2,"text":"What tibialis anterior does","anchor":"what-tibialis-anterior-does"},{"id":"b11","type":"paragraph","content":[{"kind":"text","value":"Its insertion, offset towards the inside of the foot, gives it two actions at once."}]},{"id":"b12","type":"list","ordered":false,"items":[[{"kind":"strong","value":"Ankle dorsiflexion"},{"kind":"text","value":": it lifts the foot, bringing the top of the foot closer to the shin."}],[{"kind":"strong","value":"Foot inversion"},{"kind":"text","value":": it turns the sole inwards."}],[{"kind":"strong","value":"Arch support"},{"kind":"text","value":": the position of its tendon under the inner border of the foot helps hold the curve."}]]},{"id":"b13","type":"definition","term":"Dorsiflexion","definition":"Movement bringing the top of the foot closer to the front of the shin. The opposite movement, pointing the toes down, is plantar flexion.","alsoKnownAs":["lifting the foot"]},{"id":"b14","type":"paragraph","content":[{"kind":"text","value":"Its most constant work goes unnoticed. While the leg swings forward, the foot must stay lifted so the toes do not scrape the ground; tibialis anterior is what holds it. Then, as the heel lands, it brakes the forefoot's descent instead of letting the sole slap down. Two quiet roles, repeated on every stride."}]},{"id":"b15","type":"evidence","level":"established","statement":"Tibialis anterior produces ankle dorsiflexion and controls foot placement after heel strike.","detail":"Anatomy establishes the line of action, in front of the ankle axis; the kinesiology of walking describes the eccentric braking after heel contact. The exact share taken by the toe extensors, which act in the same direction, varies between measurements.","referenceIds":["standring2020","neumann2016"]},{"id":"b16","type":"heading","level":2,"text":"Seeing tibialis anterior in movement","anchor":"seeing-tibialis-anterior-in-movement"},{"id":"b17","type":"scene3d","sceneId":"carte-corporelle","title":"Tibialis anterior along the shin","intro":"The scene shows the muscle pressed against the outer surface of the tibia and the oblique path of its tendon towards the inside of the foot. Without the 3D, picture a strap stretched from the shin to the root of the big toe, pulling the toes up as it shortens.","initialStepId":"vue-anterieure","accessibility":{"textAlternative":"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.","structures":[{"label":"Pectoralis major","description":"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.","href":"/en/body/muscles/pectoralis-major"},{"label":"Deltoids","description":"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.","href":"/en/body/muscles/deltoids"},{"label":"Biceps brachii","description":"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.","href":"/en/body/muscles/biceps-brachii"},{"label":"Abdominal wall","description":"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.","href":"/en/body/muscles/abdominal-wall"},{"label":"Quadriceps","description":"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.","href":"/en/body/muscles/quadriceps"},{"label":"Trapezius","description":"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.","href":"/en/body/muscles/trapezius"},{"label":"Latissimus dorsi","description":"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.","href":"/en/body/muscles/latissimus-dorsi"},{"label":"Erector spinae","description":"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.","href":"/en/body/muscles/erector-spinae"},{"label":"Triceps brachii","description":"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.","href":"/en/body/muscles/triceps-brachii"},{"label":"Glutes","description":"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.","href":"/en/body/muscles/glutes"},{"label":"Hamstrings","description":"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.","href":"/en/body/muscles/hamstrings"},{"label":"Calves","description":"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.","href":"/en/body/muscles/calves"},{"label":"Rotator cuff","description":"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.","href":"/en/body/muscles/rotator-cuff"},{"label":"Serratus anterior","description":"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.","href":"/en/body/muscles/serratus-anterior"},{"label":"Iliopsoas","description":"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.","href":"/en/body/muscles/iliopsoas"},{"label":"Hip adductors","description":"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.","href":"/en/body/muscles/hip-adductors"},{"label":"Forearm muscles","description":"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.","href":"/en/body/muscles/forearm"},{"label":"Tibialis anterior","description":"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.","href":"/en/body/muscles/tibialis-anterior"},{"label":"Diaphragm","description":"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.","href":"/en/body/muscles/diaphragm"}],"steps":[{"id":"vue-anterieure","title":"Anterior view","body":"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."},{"id":"vue-posterieure","title":"Posterior view","body":"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."},{"id":"plan-profond","title":"Deep and medial muscles","body":"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."},{"id":"chaine-de-poussee","title":"Pushing chain","body":"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."},{"id":"chaine-de-tirage","title":"Pulling chain","body":"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."}],"license":"Z-Anatomy et BodyParts3D — CC-BY-SA 4.0"}},{"id":"b18","type":"heading","level":2,"text":"The movements it takes part in","anchor":"the-movements-it-takes-part-in"},{"id":"b19","type":"paragraph","content":[{"kind":"text","value":"In the "},{"kind":"link","value":"squat","href":"/en/movements/squat","external":false},{"kind":"text","value":" it works as a restraint: the shin travels forward over the fixed foot, and tibialis anterior controls that movement. It is what allows the knee to travel over the foot, without which the descent would be limited."}]},{"id":"b20","type":"paragraph","content":[{"kind":"text","value":"Above all it is the muscle of "},{"kind":"link","value":"walking","href":"/en/movements/walking","external":false},{"kind":"text","value":" and "},{"kind":"link","value":"running","href":"/en/movements/running","external":false},{"kind":"text","value":", loaded on every stride far more than in any dedicated exercise."}]},{"id":"b21","type":"heading","level":2,"text":"Related structures","anchor":"related-structures"},{"id":"b22","type":"heading","level":3,"text":"Synergists","anchor":"synergists"},{"id":"b23","type":"list","ordered":false,"items":[[{"kind":"text","value":"Extensor digitorum longus and extensor hallucis longus lift the foot with it."}],[{"kind":"text","value":"The "},{"kind":"link","value":"quadriceps","href":"/en/body/muscles/quadriceps","external":false},{"kind":"text","value":" controls the knee while tibialis anterior controls the ankle, on the same face of the limb."}],[{"kind":"text","value":"Tibialis posterior, lying deep, shares foot inversion despite an opposite action on flexion."}]]},{"id":"b24","type":"heading","level":3,"text":"Antagonists","anchor":"antagonists"},{"id":"b25","type":"list","ordered":false,"items":[[{"kind":"text","value":"The "},{"kind":"link","value":"calves","href":"/en/body/muscles/calves","external":false},{"kind":"text","value":" produce plantar flexion, the exact opposite movement. Tibialis anterior and the triceps surae form the pair that balances the ankle."}],[{"kind":"text","value":"The fibularis muscles produce eversion, opposed to inversion."}]]},{"id":"b26","type":"heading","level":2,"text":"What the 3D model simplifies","anchor":"what-the-3d-model-simplifies"},{"id":"b27","type":"callout","tone":"limit","title":"A muscle shown alone in a shared compartment","content":[[{"kind":"text","value":"The scene isolates tibialis anterior. In the leg it shares its compartment with the toe extensors, whose bellies sit right against it and whose tendons run beside its own. An observer would see them together, not apart."}],[{"kind":"text","value":"The ankle retinaculum, the fibrous band that holds the tendon flat against the joint, is not represented. Yet it is what stops the tendon bowstringing away during dorsiflexion, and so what makes it effective."}]]},{"id":"b28","type":"heading","level":2,"text":"Sources","anchor":"sources"},{"id":"b29","type":"sourceList","title":"Main sources","referenceIds":["standring2020","neumann2016"]},{"id":"b30","type":"shapierAction","actionId":"exercises-wall-ankle-dorsiflexion","label":"Train ankle dorsiflexion","description":"Wall ankle dorsiflexion is practiced in Shapier ; Body Lab only explains why this movement matters.","webTarget":"https://shapier.app/en/exercises/wall-ankle-dorsiflexion","appTarget":"shapier://exercises/wall-ankle-dorsiflexion"},{"id":"b31","type":"quiz","title":"Check my understanding","questions":[{"id":"q1","prompt":"Where does tibialis anterior do most of its work?","choices":[{"id":"q1c1","label":"In walking and running, on every stride","correct":true,"explanation":"The page states it is loaded on every stride far more than in any dedicated exercise."},{"id":"q1c2","label":"In targeted strengthening exercises","correct":false,"explanation":"A muscle is easily associated with its training, but the page says its most constant work happens in walking, not in a dedicated exercise."},{"id":"q1c3","label":"Only when the toes are lifted against resistance","correct":false,"explanation":"That describes concentric dorsiflexion alone; its most frequent role is holding the foot while the leg swings forward and braking the forefoot's descent."}]},{"id":"q2","prompt":"Which actions does tibialis anterior combine thanks to its insertion on the inner side of the foot?","choices":[{"id":"q2c1","label":"Ankle dorsiflexion and foot inversion","correct":true,"explanation":"Its insertion, offset towards the inside of the foot, gives it these two actions at once."},{"id":"q2c2","label":"Ankle dorsiflexion and eversion","correct":false,"explanation":"Eversion is the opposite of inversion; it is produced by the fibularis muscles, not by tibialis anterior."},{"id":"q2c3","label":"Plantar flexion and inversion","correct":false,"explanation":"Plantar flexion is the exact opposite movement of dorsiflexion, produced by the calves, its antagonists."}]},{"id":"q3","prompt":"What role does tibialis anterior play in the squat?","choices":[{"id":"q3c1","label":"A restraint role, controlling the shin as it travels forward over the fixed foot","correct":true,"explanation":"It is what allows the knee to travel over the foot during the descent."},{"id":"q3c2","label":"A propulsion role that drives the body back up","correct":false,"explanation":"Squats are easily associated with pushing, but the page describes control of movement, not upward force production."},{"id":"q3c3","label":"None, it stays relaxed throughout the movement","correct":false,"explanation":"The text says instead that it works as a restraint to control the shin's displacement."}]}]},{"id":"b32","type":"relatedContent","title":"Read next","targetIds":["en-anatomy-calves","en-anatomy-quadriceps","en-anatomy-hamstrings"]}],"relations":[{"type":"uses-structure","targetId":"en-anatomy-calves"},{"type":"produces-movement","targetId":"en-movement-squat"},{"type":"uses-structure","targetId":"en-anatomy-quadriceps"},{"type":"next-step","targetId":"en-anatomy-hamstrings"}],"authors":["equipe-editoriale-shapier"],"reviewers":["Thanh Chau"],"references":[{"id":"standring2020","authors":"Standring S","year":2020,"title":"Gray's Anatomy: The Anatomical Basis of Clinical Practice, 42nd edition","source":"Elsevier","kind":"book","url":"https://shop.elsevier.com/books/grays-anatomy/standring/978-0-7020-7705-0"},{"id":"neumann2016","authors":"Neumann DA","year":2016,"title":"Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation, 3rd edition","source":"Elsevier","kind":"book","url":"https://shop.elsevier.com/books/kinesiology-of-the-musculoskeletal-system/neumann/978-0-323-28753-1"}],"review":{"publishedAt":"2026-08-02","reviewedAt":"2026-08-02","reviewDueAt":"2027-08-02","evidenceLevel":"established"},"limitations":["The scene shows tibialis anterior alone: the toe extensors, which sit right beside it and work with it, are not represented.","The ankle retinaculum, which holds the tendon flat against the joint, is absent from the model although it shapes the tendon's path.","Persistent discomfort at the front of the shin can have several causes and calls for examination by a health professional."],"seo":{"title":"Tibialis anterior — the muscle that lifts the foot on every step","description":"Tibial origin, tendon to the first cuneiform, role in dorsiflexion and arch support, and how it balances the calf muscles.","canonicalPath":"/en/body/muscles/tibialis-anterior","image":"/og/en/anatomy-tibialis-anterior.png"},"app":{"offlineEligible":true},"version":1}