Anterior and Lateral compartment of the leg Flashcards
label the correct organization of leg?
- Deep fascia of the leg
- Anterior intermuscular septa
- Posterior intermuscular septa
- Interosseous membrane
- Anterior
- Lateral
- Posterior
what is the anterior compartment of leg?
Primarily responsible for
Dorsiflexion of the ankle
what is anterior compartment innervated by?
Deep Fibular Nerve
what are the 2 extensor retinacula in anterior compartment of leg?
- Superior Extensor Retinaculum
- Inferior Extensor Retinaculum
what is tibialis anterior in leg?
- The most medial and superficial dorsiflexor
- Lies against the lateral surface of the tibia
what is origin, function, insertion of Tibialis Anterior
origin - Lateral condyle of Tibia, & Interosseous Membrane
function - Dorsiflexes Ankle, Inverts the Foot
insertion - Medial Cuneiform &
Base of 1st MT
what is extensor digitorum longus?
The most posterior and lateral of the muscles in the anterior compartment of the leg
what is origin, function, insertion of extensor digitorum longus?
origin - Lateral condyle of tibia,
Superior part of medial
fibula, & Interosseous
membrane
function - Dorsiflexes Ankle, Extends Lateral four Digits
insertion - Middle & Distal Phalanges of Lateral Four Digits
what is peroneus tertius?
Is a separated part of EDL
what is origin, function, insertion of peroneus tertius?
origin - Inferior Fibula and
interosseous membrane
function - Weakly Aids in
Dorsiflexion of Ankle and
Eversion of the Foot
insertion - Base of 5th MT
what is extensor hallucis longus?
- Lies next to and is partly overlapped by the tibialis anterior muscle
- The tendon appears between the tendons of the TA and EDL
what is origin, function, and insertion of extensor hallucis longus?
origin - Middle ⅓ of Anterior Fibula, & Interosseous Membrane
function - Dorsiflexes Ankle, Extends 1st Digit (Great Toe)
insertion - Distal Phalanx of 1st Digit (Great toe)
what is the lateral compartment of leg?
Primarily responsible for
Eversion of the foot
what is lateral compartment innervated by?
Superficial Fibular Nerve
what is the 2 fibular retinacula in lateral compartment?
- Superior Fibular Retinaculum
- Inferior Fibular Retinaculum
what is peroneus longus?
The longer and more superficial of the two fibularis muscles
what is origin, function, and insertion of peroneus longus
origin - Head and upper portion of Fibula
function - Everts Foot, Weakly Plantarflexes Ankle
insertion - Plantar Aspect of Base of 1st MT and Medial
Cuneiform
what is peroneus brevis?
- Lies deep to the FL
- Shorter than its partner in the lateral compartment
what is origin, function, and insertion of peroneus brevis?
origin - Inferior ⅔ of
Lateral Fibula
function - Everts Foot, Weakly Plantarflexes Ankle
insertion - 5th Metatarsal
