Abductor hallucis muscle
| Abductor hallucis muscle |
|---|
|
| Sole muscles of man |
| origin |
| Medial tubercle of the calcaneus |
| approach |
| Base of the proximal phalanx of the big toe |
| function |
| Flexing and pulling out the big toe |
| Innervation |
| Medial plantar nerve |
| Spinal segments |
| S1-S2 |
The abductor hallucis muscle ( Latin for "big toe spreader") is one of the skeletal muscles on the sole of the foot . The muscle forms the inner (medial) edge of the foot, its abdomen can be felt in the proximal part of the foot.
The muscle has three origins:
- Processus medialis tuberis calcanei on the calcaneus
- Retinaculum musculorum flexorum , superficial leaf
- Plantar aponeurosis
The muscle pulls over the medial sesamoid bone on the head of the first metatarsal bone , which serves as a pivot (hypomochlion), and attaches to the base of the base of the big toe.
function
The abductor hallucis muscle spreads the big toe outward. In addition, it is also involved in the flexion of the metatarsophalangeal joint of the big toe. It also plays a role in tensioning the longitudinal arch of the foot .
See also
literature
- Walther Graumann, Rolf Baur: Compact textbook anatomy . Volume 2. Schattauer Verlag, 2003, ISBN 978-3-7945-1944-6 , p. 224.