The Ankle and Foot Flashcards
What bones make up the talocrural joint?
- Distal fibula
- Tibia
- Talus
What bones make up the midfoot?
- Navicular
- Cuboid
- 3 cuneiform
What bones make up the forefoot?
- Metatarsals
- Phalanges
What ligaments supports the medial ankle?
- Deltoid ligament
- Plantar calcaneonavicular ligament (spring)
- Plantar aponeurosis
What ligaments support the lateral aspect of the ankle?
- Anterior talofibular
- Calcaneofibular
- Bifurcate ligament
- Posterior talofibular ligament
- Dorsal calcaneocuboid ligament
- Short plantar ligament
- Long plantar ligament
What muscles cross the anterior aspect of the ankle?
- Anterior tibialis
- Extensor hallicus longus
- Extensor digitorum longus
- Peroneus tertius
What muscles are found in the lateral compartment of the ankle?
- Peroneus longus
- Peroneus brevis
What muscles are in the posterior compartment of the leg?
- Gastronemius
- Soleus
- Plantaris
What muscles are found in the deep compartment of the shank?
- Posterior tibialis
- Flexor hallucis longus
- Flexor digitorum longus
What is the action of the posterior tibialis?
- Plantar flexion and inversion
What are the 3 functions for the talocrural/ subtalar/ mid-tarsal joints?
- Shock absorption
- Absorb lower extremity rotary forces
- Provide lever for effect propulsion
What are the 3 components of open chain pronation?
- Calcaneal Eversion
- Talar Abduction
- Talar Dorsiflexion
What are the 3 components of open chain supination
- Calcaneal Inversion
- Talar Adduction
- Talar Plantar flexion
What occurs at the talocrural joint during pronation?
- Mostly dorsiflexion
- Some eversion and abduction
What occurs at the talocrural joint during supination?
- Mostly plantar flexion
- Some inversion and adduction
What are the 3 components of closed chain pronation at the subtalar joint?
- Calcaneal eversion
- Talar adduction and dorsiflexion
What occurs at the medial longitudinal arch during closed chain pronation?
Lowers
What occurs at the tib/fib joint during closed chain pronation?
IR of the tib/fib
What are the 3 components of closed chain supination at the subtalar joint?
- Calcaneal inversion
- Talar abduction and plantar flexion
What occurs at the medial longitudinal arch during closed chain supination?
- Elevates
What occurs at the tib/fib during closed chain supination?
- ER of the tib-fib
What does the function of the mid-tarsal joint depend on in closed chain pronation and supination?
- Subtalar joint mechanics
What is the effect subtalar pronation on the mid tarsal joint?
- Mobility
What is the effect subtalar supination on the mid tarsal joint?
- Stability