September 2026

The Bones of the Foot and Lower Leg, Mapped

By Your Health Magazine Health Information Team

You step off a curb, feel a sharp pain near your ankle, and wonder: Is the problem in the foot, the lower leg, or the joint connecting them? Because so many bones meet in a relatively small area, the location of pain does not always reveal which structure is affected. Understanding the foot and leg bones can make symptoms, imaging reports, and conversations with healthcare professionals easier to follow.

The Lower Leg: Two Bones With Different Jobs

The lower leg extends from the knee to the ankle and contains two long bones: the tibia and fibula. They run beside each other but differ considerably in size and function.

Tibia

The tibia, commonly called the shinbone, is the larger bone on the inner side of the lower leg. It is the primary weight-bearing bone between the knee and ankle. Its upper end helps form the knee joint, while its lower end forms the inner portion of the ankle.

The bony bump on the inside of the ankle is the medial malleolus, which is part of the tibia. Pain along the tibia may follow a direct impact, repetitive activity, or a fracture. Exercise-related shin pain can also come from nearby muscles and connective tissues, so it should not automatically be assumed to be a bone problem.

Fibula

The fibula is the thinner bone running along the outer side of the lower leg. It carries much less body weight than the tibia, but it provides attachment points for muscles and helps stabilize the ankle.

The lower end of the fibula forms the lateral malleolus, the prominent bump on the outside of the ankle. Because it extends lower than the medial malleolus, it contributes to the ankle’s side-to-side stability.

Where the Lower Leg Meets the Foot

The main ankle joint is formed by the lower ends of the tibia and fibula surrounding the talus, a bone at the top of the foot. This arrangement is sometimes described as an ankle mortise because the leg bones create a socket around the talus.

The ankle primarily allows the foot to move upward and downward. Nearby joints, particularly the joint between the talus and heel bone, contribute to side-to-side movement and help the foot adjust to uneven ground.

Not every pain around the ankle comes from a bone or the ankle joint. Ligaments, muscles, nerves, and tendons also occupy this area. For example, discomfort behind the ankle or above the heel may involve the Achilles tendon. Persistent symptoms deserve attention, as explained in this overview of Achilles tendonitis and foot and leg pain.

A Map of the 26 Bones in Each Foot

Each foot generally contains 26 bones divided into three groups: seven tarsal bones, five metatarsal bones, and 14 toe bones called phalanges. These bones create the hindfoot, midfoot, and forefoot.

Hindfoot: Talus and Calcaneus

Talus: The talus sits between the lower leg and the rest of the foot. It receives and transfers forces from the tibia through the ankle and into the foot.
Calcaneus: Better known as the heel bone, the calcaneus is the largest bone in the foot. It supports the heel during standing and walking and provides an attachment point for the Achilles tendon.

The talus rests above the calcaneus. Their connection forms the subtalar joint, which helps the foot tilt inward and outward as you walk across sloped or irregular surfaces.

Midfoot: Five Bones Supporting the Arches

The midfoot contains the navicular, cuboid, and three cuneiform bones.

Navicular: Located toward the inner side of the foot, the navicular sits in front of the talus and contributes to the medial arch.
Cuboid: This cube-shaped bone lies along the outer side of the midfoot, in front of the calcaneus.
Cuneiforms: The medial, intermediate, and lateral cuneiform bones sit between the navicular and the first three metatarsals.

Together with the metatarsals, these bones help form the foot’s longitudinal and transverse arches. The arches are not supported by bone alone; ligaments, muscles, tendons, and the plantar fascia also help the foot absorb force, adapt to the ground, and become a firm platform for pushing forward.

Forefoot: Metatarsals and Toes

Five metatarsal bones extend from the midfoot toward the toes. They are numbered one through five, beginning on the big-toe side. The first metatarsal is associated with the big toe, while the fifth runs along the outer edge of the foot.

The metatarsals help distribute pressure during standing and provide leverage during walking and running. The area where they meet the midfoot is called the tarsometatarsal, or Lisfranc, joint complex. An injury here can sometimes be mistaken for a simple sprain, particularly when swelling and pain occur across the midfoot.

The toes contain 14 phalanges. The big toe has two: a proximal and distal phalanx. Each of the other toes has three: proximal, middle, and distal. Although small, the toe bones help with balance and forward propulsion. The big toe is especially important during the push-off phase of a step.

Why Pain Does Not Always Match the Bone Map

Foot and lower-leg pain may arise from bone, but it can also involve a joint, ligament, tendon, muscle, nerve, or surrounding soft tissue. A sprain affects ligaments, while a strain involves a muscle or tendon. Arthritis affects joints, and repetitive loading may cause a stress fracture, often producing localized pain that worsens with activity.

Some fractures still allow limited walking, so the ability to bear weight does not completely rule out a broken bone. Early stress fractures may also be difficult to see on an initial X-ray. A healthcare professional may base further evaluation on the injury, examination findings, and persistence of symptoms.

When to Seek Care

Seek prompt medical evaluation after a significant injury or when pain is accompanied by marked swelling, bruising, pinpoint bone tenderness, worsening symptoms, or difficulty bearing weight. Emergency care may be appropriate for an obvious deformity, exposed bone, uncontrolled bleeding, severe pain, numbness, a pale or bluish foot, or a foot that feels unusually cold.

Arrange an appointment if recurring pain interferes with walking, work, exercise, or sleep, or if symptoms fail to improve. People with diabetes, poor circulation, reduced sensation, or known bone disease should be especially cautious about new foot injuries.

A primary care clinician can perform an initial assessment. Depending on the problem, care may also involve a podiatrist, sports medicine physician, orthopedic specialist, or foot-and-ankle surgeon. For additional general health education, readers can explore the MedlinePlus health topics directory.

Knowing the map of the foot and leg bones cannot diagnose an injury, but it can help you describe exactly where symptoms occur and understand why a small area of pain may affect your balance, stride, and everyday mobility.