Anatom3DLeft first metatarsal bone
Os metatarsi I sinistrum · Levá první nártní kost
Skeleton
Looks like
The short, thick long bone of the big toe, behind the ball of the foot.
What it does
Bears the most weight of the metatarsals when pushing off and supports the inner arch.
Keeping it well
Bunion (hallux valgus) forms where its head drifts inward; painful red swelling of its joint at night may be gout.
Related conditions
- Acromegaly
- Buerger's disease (thromboangiitis obliterans)
- Bunion & foot deformity
- Chronic venous insufficiency
- Clubfoot (talipes equinovarus)
- Flat feet (pes planus)
- Fractures
- Fragility fracture
- Frailty & falls in older age
- Ganglion cyst
- Gout
- Hammer toe and claw toe
- Hyperparathyroidism
- Lymphatic filariasis (elephantiasis)
- Lymphoedema
- Morton's neuroma
- Osteogenesis imperfecta (brittle bone disease)
- Osteomalacia & rickets
- Osteomyelitis (bone infection)
- Osteoporosis
- Paget's disease of bone
- Restless legs syndrome
- Sarcoma
- Varicose veins
- Venomous snakebite
- Vitamin B1, C and other deficiencies
- Vitamin D deficiency