Lower Leg Musculature

Question 1

Anterior Tibialis

Answer 1

★ Insertion
Medial and plantar aspects of the medial cuneiform and the base of the first metatarsal.
★ Isolated Function
Concentrically accelerates dorsiflexion and inversion.
★ Integrated Function
Eccentrically decelerates plantarflexion and eversion
Isometrically stabilizes the arch of the foot

Question 2

Posterior Tibialis

Answer 2

★ Insertion
On the navicular tuberosity
★ Isolated Function
Concentrically accelerates plantarflexion and inversion of the foot.
★ Integrated Function
Eccentrically decelerates dorsiflexion and eversion of the foot
Isometrically stabilizes the arch of the foot.

Question 3

Soleus & Grastrocnemius

Answer 3

★ Insertion
Calcaneus via the Achilles tendon.
★ isolated Function
Concentrically accelerates plantarflexion
★ Integrated Function
Eccentrically decelerates ankle dorsiflexion
Isometrically stabilizes the foot and ankle complex

Question 4

Peroneus Longus

Answer 4

★ Insertion
The lateral surface of the medial cuneiform and lateral side of the base of the first metatarsal
★ Isolated function
Concentrically plantarflexes and everts the foot
★ Integrated Function
Eccentrically decelerates ankle dorsiflexion
Isometrically stabilizes the foot and ankle complex