Anatomy - Ankle Joint Flashcards
What type of joint is the ankle joint?
Hinge, synovial.
What movements are permitted at the ankle joint?
Dorsiflexion and plantarflexion.
Which muscles of the leg are responsible for dorsiflexion?
Tibialis anterior, extensor hallucis longus and extensor digitorum longus (anterior compartment).
Which muscles of the leg are responsible for plantarflexion?
Gastrocnemius and soleus (posterior compartment).
What 3 bones make up the ankle joint?
Tibia, fibula and talus.
What binds the tibia and fibular?
Tibiofibular ligaments.
What do the tibia and fibula form that the talus articulates with?
A mortise.
What is the name of the ligament originating from the medial malleolus of the foot?
The deltoid ligament.
What 3 ligaments are found on the lateral side of the ankle joint?
- Anterior talofibular. 2. Posterior talofibular. 3. Calcaneofibular.
What type of joint is the superior tibiofibular joint?
Synovial.
What type of joint is the inferior tibiofibular joint?
Fibrous.
What movements occur at the subtalar joint?
Inversion and eversion.
What movements enable one to walk on uneven ground?
Inversion and eversion.
What 3 bones articulate in the subtalar joint?
- Talus. 2. Calcaneus. 3. Navicular bone.
What ligament does the talus articulate with in the subtalar joint?
Spring ligament.
What joint shares the same synovial cavity as the subtalar joint?
Midtarsal joint.
What muscles are the predominant invertors?
Tibialis anterior and posterior.
What muscles are the predominant evertors?
Peroneus longus and brevis.
Inversion and eversion take place mainly at which joint?
Subtalar.
What 2 bones does the talus articulate with?
Navicular and calcaneus.
Name 3 things that support the medial longitudinal arch of the foot.
- The plantar aponeurosis. 2. The spring ligament. 3. The flexor hallucis longus.
