Ankle And Foot Muscles Flashcards
Extensors Digitorum Brevis Origin
Anterior part of dorsal surface of calcaneus, anterior and medial to lateral malleolus, inferior extensors retinaculum
Extensor Digitorum Brevis Insertion
Lateral 3 tendons attach to tendons of Extensor Digitorum Longus to digits 2-4
Extensor Digitorum Brevis action
- Extend toes 2-4 at MTP joint
- Assist Ext. Dig. Longus
Extensor Digitorum Brevis innervation
Deep peroneal n. (L5-S1)
Extensor Hallucis Brevis origin
(Same as Ext. Dig. Brevis)
Anterior part of dorsal surface of calcaneus, anterior and medial to lateral malleolus, inferior extensor retinaculum
Extensor Hallucis Brevis Insertion
Medial tendon of 4 tendons to base of proximal phalanx of hallux
Extensor Hallucis Brevis action
- Extend hallux at MTP joint
- Assist Ext. Hallucis Longus
Extensor Hallucis Brevis Innervation
Deep Peroneal n. (L5-S1)
Muscles on the dorsum of the foot
- extensor Digitorum Brevis
- Extensor Hallucis Brevis
Muscles on the 1st layer of the sole of the foot
- Abductor Hallucis
- Flexor Digitorum Brevis
- Abductor Digiti minimi
Abductor Hallucis origin
- Medial process of tuber calcaneus
- flexor retinaculum
- plantar aponeurosis
Abductor Hallucis Insertion
Medial side of base of proximal phalanx of hallux
Abductor Hallucis action
Abducts and flexes hallux
Abductor Hallucis innervation
Medial Plantar n. (S1, S2)
Flexor Digitorum Brevis Origin
- Medial process of tuber calcaneus
- Plantar aponeurosis
- Intermuscular septum
Flexor Digitorum Brevis Insertion
Both sides of middle phalanx of lateral four digits
Flexor Digitorum Brevis action
Flexes lateral 4 digits (PIP)
Flexor Digitorum Brevis Innervation
Medial Plantar n. (S1-S2)
Abductor Digiti minimi origin
- Medial and lateral processes or tuber calcanei
- Plantar aponeurosis
- Intermuscular septum