Ankle And Foot Flashcards
What is the plantigrade position?
Standing directly on the soles of the feet
Which bones form the ankle joint?
Tibia
Fibula
Talus
Which joint allows inversion and eversion?
Subtalar joint
What forms the transverse arch?
Cuneiforms - wedge shaped so they are thinner on the plantar surface
What forms the medial longitudinal arch?
Plantar fascia and plantarflexion muscles
What makes up the lateral longitudinal arch?
Dense CT of the sole
As a general rule, where do plantar flexors insert?
Posterior to malleoli
As a general rule, where do dorsiflexors insert?
Anterior to malleoli
As a general rule, where do invertors insert?
Medial aspect of foot
As a general rule, where do evertors insert?
Lateral aspect of foot
Why can we plantarflex more than dorsiflex?
The talus is wider anteriorly than posteriorly
During dorsiflexion the talus gets wedged between the malleoli so cannot go further
Name the ligaments of the medial side of the ankle
Posterior tibiotalar
Anterior tibiotalar
Deltoid (tibiocalcaneal and tibionavicular)
Name the ligaments of the lateral side of the ankle
Anterior talofibular
Posterior talofibular
Calcaneo-fibular
Which ligament is likely to tear during plantarflexion?
Anterior talofibular ligament (lateral side)
What are the 2 phases of the gait cycle?
Stance and swing
Which movements are required for the initial contact of heel to the floor?
Hip flexion (iliopsoas) Knee extension (quads) Ankle dorsiflexion (anterior leg)
Which movements are required as the foot takes the load?
Knee extension (quads) Ankle neutral (invertors and evertors)
Which movements are required as we move onto the ball of our foot?
Hip extension (hamstrings) Ankle plantarflexion (gastrocnemius and soleus)
Which movements are required as we push off from the ground at the end of stance phase?
Ankle plantarflexion (gastrocnemius and soleus) Toe flexion (flexor digitorum longus and flexor hallucis longus)
What are the movements required to lift the leg and raise the foot at the start of swing phase?
Hip flexion (iliopsoas and rectus femoris) Knee flexion (hamstrings) Ankle dorsiflexion (anterior leg)
Which movement are required to swing the leg in walking?
Hip flexion (iliopsoas and rectus femoris) Knee extension (quads) Ankle dorsiflexion (anterior leg)
Which structures confer lateral stability to the knee?
Tensor fascia lata
Iliotibial tract
Lateral collateral ligament
Falling forward whilst standing is prevented mainly by which muscle?
Soleus
Describe antalgic gait
Limp
Shortened stance phase with gentle heel strike
Pain reduce shock coming up the leg