Metatarsal Bones Anatomy 2026 | Podiatrist

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The Five Metatarsals: Structure and Function

The five metatarsals are long tubular bones numbered 1–5 from the medial (big toe) side to the lateral (little toe) side. Each has a base (proximal end articulating with the midfoot), a shaft (diaphysis), and a head (distal end forming the ball-of-foot joints with the toes).

The first metatarsal is shorter, wider, and carries approximately 40–60% of forefoot loading during the push-off phase of gait — it is by far the most biomechanically critical. The second metatarsal is typically the longest and is recessed deepest into the midfoot, making it the most stable but also most vulnerable to stress fractures.

The metatarsal heads form the metatarsophalangeal (MTP) joints with the proximal phalanges. These joints are the site of bunions (first MTP), Morton’s neuroma (2nd-3rd interspace), and plantar plate tears (2nd MTP most commonly).

Common Metatarsal Injuries

Metatarsal stress fractures are the most common overuse injury in athletes and active individuals. The second and third metatarsal shafts are most vulnerable — they experience the highest bending moments during running. Pain is insidious in onset, localizes to the dorsal forefoot, and worsens progressively with activity. Treatment: stiff-soled shoe or walking boot for 4–8 weeks.

Jones fractures occur at the proximal diaphysis of the fifth metatarsal — a zone of poor blood supply that makes healing notoriously slow and unreliable. They are distinct from avulsion fractures at the styloid process. Jones fractures often require surgical fixation (intramedullary screw) in athletes.

Lisfranc injuries involve the tarsometatarsal joint complex — the articulation between the metatarsal bases and the midfoot cuneiform and cuboid bones. These can range from subtle ligament sprains (which may appear normal on standard X-ray) to complete fracture-dislocations requiring surgical reduction and fixation. Missed Lisfranc injuries lead to chronic midfoot pain and arthritis.

Metatarsalgia: Ball of Foot Pain

Metatarsalgia is a broad term for ball-of-foot pain originating at the metatarsal heads. The most common cause is excessive pressure concentration under the 2nd and 3rd metatarsal heads — often related to a short first metatarsal (Morton’s toe), hammertoes, or worn footwear that no longer provides adequate cushioning.

Plantar plate tears — partial or complete tears of the fibrocartilaginous ligament stabilizing the MTP joint from below — cause a V-shaped toe spread and dorsal drift of the affected toe (most commonly the 2nd). They require MRI for diagnosis and may need surgical repair.

Treatment for metatarsalgia: metatarsal pad placement just proximal to the painful heads, forefoot cushioning, and addressing the biomechanical driver (first metatarsal hypermobility, hammertoe correction).

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