Stability of ankle joint | DNB MCQ

NIME Next Batch PGI Quest in Delhi from 10 August to 20 August

Stability of ankle joint maintained by all except?

A. Cruciate ligaments 
B. Collateral ligaments 
C. Tendons of muscles crossing the joint 
D. Close apposition of articular surfaces of bones

Ans: A. Cruciate ligaments 

LIGAMENTS

a. The ankle joint is bound by the strong deltoiwl ligament and three lateral ligaments: the anterior talofibular ligament, the posterior talofibular ligament, and the calcaneofibular ligament.

b. The deltoid ligament supports the medial side of the joint, and is attached at the medial malleolus of the tibia and connect in four places to the sustentaculum tali of the calcaneus, calcaneonavicular ligament, the navicular

tuberosity, and to the medial surface of the alus.

c. The anterior and posterior talofibular ligaments support the lateral side of the joint from the lateral malleolus of the fibula to the dorsal and ventral ends of the talus.

d. The calcaneofibular ligament is attached at the lateral malleolus and to the lateral surface of the calcaneus.
e. The joint is most stable in dorsiflexion and a sprained ankle is more likely to occur when the foot is plantar flexed. This type of injury more frequently occurs at the anterior talofibular ligament.