The Ankle Joint and Tibiofibular Joints Flashcards
What type of joint is the ankle joint?
A synovial hinge
What are the articular surfaces of the ankle?
The distal end of the tibia and fibula with the superior part of the talus bone
Identify structures labelled 1 and 2
1- Lateral malleolus
2- Medial malleolus
When is the malleolar grip on the talus the strongest?
During dorsiflexion of the ankle
When is the ankle joint most unstable?
During plantarflexion of the ankle
Which ligament of the ankle joint is the weakest?
Anterior talofibular
Identify the structures labelled 1-5
1- Medial ligament of ankle joint
2- Lateral ligament of ankle joint
3- Anterior talofibular ligament
4- Calcaneofibular ligament
5- Posterior talofibular ligament
Which muscles produce dorsiflexion of the ankle?
Muscles of the anterior compartment: Tibialis anterior Extensor hallicus longus Extensor digitorum longus
Which muscles produce plantarflexion of the ankle?
Muscles of the posterior compartment: Gastrocnemius Plantaris Posterior tibialis
What are the names of the two tibio-fibular joints?
Superior/proximal tibio-fibular joint
Inferior/distal tibio-fibular joint
What type of joint is the proximal tibio-fibular joint?
Synovial plane
What type of joint is the distal tibio-fibular joint?
Compound fibrous joint
