Leg Complex Flashcards
(19 cards)
What is the origin of the anterior tibialis?
The first metatarsal; lateral condyle and proximal two-thirds of the lateral surface of the tibia.
What is the insertion of the anterior tibialis?
Medial and plantar aspects of the medial cuneiform and the base of the first metatarsal.
What is the concentric action of the anterior tibialis?
Ankle dorsiflexion and inversion.
What is the eccentric action of the anterior tibialis?
Ankle plantar flexion and eversion.
What is the isometric action of the anterior tibialis?
Stabilizes the arch of the foot.
What is the innervation of the anterior tibialis?
Deep peroneal nerve.
What is the origin of the posterior tibialis?
Proximal two-thirds of posterior surface of the tibia and fibula.
What is the main insertion of the posterior tibialis?
Navicular tuberosity and the medial cuneiform bone.
What are the tarsal bones involved in the insertion of the posterior tibialis?
Every tarsal bone (navicular, cuneiform, cuboid) but the talus plus the bases of the second through the fourth metatarsal bones.
What is the concentric action of the posterior tibialis?
Ankle plantar flexion and inversion of the foot.
What is the eccentric action of the posterior tibialis?
Ankle dorsiflexion and eversion.
What is the isometric action of the posterior tibialis?
Stabilizes the arch of the foot.
What is the innervation of the posterior tibialis?
Tibial nerve.
What is the origin of the soleus?
From the posterior side of the tibia.
What is the insertion of the soleus?
Posterior surface of the fibular head and proximal one-third of its shaft; calcaneus via the Achilles tendon.
What is the concentric action of the soleus?
Accelerates plantar flexion.
What is the eccentric action of the soleus?
Decelerates ankle dorsiflexion.
What is the isometric action of the soleus?
Stabilizes the foot and ankle complex.
What is the innervation of the soleus?
Tibial nerve.
