Ankle Joint Flashcards
1
Q
What type of joint is the ankle?
A
Hinge synovial joint
2
Q
Why is ankle joint strongest during dorsiflexion?
A
The anterior, wider part of the trochlea is moved posteriorly, spreading the tibia and fibula slightly apart
3
Q
Why is ankle joint relatively unstable during plantarflexion?
A
The trochlea is narrower posteriorly and therefore lies loosely within the malleolar mortise
4
Q
What supports the joint capsule of the ankle?
A
Strong collateral ligaments
5
Q
What does the lateral ligament of the ankle consist of?
A
Anterior tibofibular ligament, posterior talofibular ligament, and calcaneofibular ligament
6
Q
What are the four parts of the medial ligament of the ankle?
A
Tibionavicular, tibiocalcaneal, anterior tibiotalar, posterior tibiotalar
