00:01
Now let’s turn to the fibula. We can see the
fibula has a head and neck, and then it has
a thin shaft, and then dilates inferiorly
or distally to form the lateral malleolus.
00:12
Here we can see it’s slender. It’s positioned
posterolaterally to the tibia, and it’s
attached to the tibia via this interosseous
membrane. Proximally, we have an enlarged
head, and then we have a narrow neck. The
head articulates with the articular surface
on the lateral surface of the tibia. Here,
we can see an articular facet which allows
the head of the fibula to articulate with
the tibia. As we go down the shaft, we see
we have lateral and we have medial surfaces. We
have an interosseous border where the membrane,
the interosseous membrane will pass between
the two, and we also have this posterior border
which we can see here. Distally, we have a
lateral expansion, and this is the lateral
malleolus. Here we can see the malleolar fossa,
and here we can see the lateral malleolus here.
01:10
And this combined with the medial malleolus
forms the articulation with the talus of the
foot to form the ankle joint.