QuestionSBA
QuestionChoice
The deltoid ligament is comprised of 4 components, each of which attaches to the medial malleolus of the tibia:

1. The posterior tibiotalar ligament connects the medial malleolus to the posterosuperior aspect of the talus.
2. The tibiocalcaneal ligament connects the medial malleolus to the sustenaculum tali of the calcaneus/
3. The tibionavicular ligament connects the medial malleolus to the medial aspect of the navicular bone
4. The anterior tibiotalar ligament connects the tip of the medial malleolus to the anterosuperior aspect of the talus.

Eversion stretches these ligaments, leading to sprain or tear.
10001036
a
Medial malleolus
QuestionChoice
The lateral malleolus connects to 3 main lateral ligaments: the posterior talofibular ligament, the calcaneofibular ligament and the anterior talofibular ligament. These are stretched upon inversion of the ankle.
10001037
b
Lateral malleolus
QuestionChoice
The 2 most relevant structures which attach to the 5th metatarsal are the fibularis brevis and fibularis tertius tendons. These are responsible for some of the dorsiflexion and eversion of the ankle and are shortened, rather than stretched, upon ankle inversion and are therefore not vulnerable to injury by this mechanism.
10001038
c
5th metatarsal
QuestionChoice
The most significant ligaments joining to the cuboid are the plantar calcaneocuboid ligament (short plantar ligament) and the long plantar ligament. These are at risk of injury from mechanisms causing excessive stress on the arch of the foot rather than eversion.
10001039
d
Cuboid
QuestionChoice
The lateral cuneiform has short, strong, fibrous attachments to each of its surrounding bones such as the cuboid, middle cuneiform and navicular bone. None of these are particularly at risk in ankle eversion injuries.

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10001040
e
Lateral cuneiform
Concept
Chapter
2693
3872
Ankle sprain
Topic
145
Orthopaedics
12754
A student trips and everts their ankle.

To which bony structure do their sprained ligaments most likely attach?
a