hello anatomy colleagues this is dr alsup and welcome to station number 19 where we
are talking the last of our joints so the joints of the distal leg as well as the ankle or tallow
cruel joint so we are looking at the distal end of the tibia and you can see a bit of the fibula
over here and this is the talus projecting superiorly so you are looking right here at
where we have the articulation to form the tallow curl or ankle joint so i'm going to kind of draw
an arrow which where the cavity for your ankle joint would be now you do have some distal joints
associated with how the tibia and the fibula actually articulate with one another you can see
a bit of the interosseus membrane here which would extend kind of the whole length of the shafts or
the bodies of the tibia and the fibula so we're just seeing the distal most portions of it here
and then right here basically right around where this yellow ligament is is going to
be where the distal portions of the tibia and the fibula are going to articulate and that is
going to form the distal tibiofibular joint and both the interosseus membrane and this distal
tibiofibular joint are examples of syndicmoses and if you recall what type of joint is that
it's a fibrous joint so these are not synovial joints right here whereas this
ankle or talocrural joint is a synovial joint it's a hinge joint you this ligament just in case you
were wondering but you don't have to identify it is going to be the anterior anterior tibiofibula
ligament so it has tibio and fibula so it has both tibia and fibula in it so it's indicating
that has to do with one of the the tibiofibular joints whereas any of these other ones typically
will have uh it will have its tarsal bone and another more proximal bone attachment for the
ligaments associated with the ankle joint okay so one of those ligaments you can see here is
part of the lateral ligament complex and it will be on the lateral side this is that this
is the medial malleolus of the tibia this is that lateral malleolus of the fibula and you
can see one of the lateral ligaments here and we'll see another view of it in another image
but this is that atfl or anterior talofibular ligament again you don't have to identify
that specifically but just in case you were wondering the specific name of that
now looking at a medial view of the ankle joint region i know i'm looking at a medial
view because here is the first digit or the great toe which is always medial and you can
see a complex of ligaments here shaded in light blue which are referred to as either the medial
ligaments or the deltoid ligaments and these are very robust they're very protective of this region
and you can see that all there's separate ligaments in this region but they're all going
to kind of coalesce and have an intermingling of their fibers on the medial malleolus here
so that serves to be a bit more protective than what you have on the lateral side of the joint
and this this here is still going to be that distal tibiofibular joint right here
so this actually is going to be um associated with that joint but these two ligaments right
here and there'll be another one there'll be a third one that you can't quite see in this image
are going to be parts of the lateral ligaments of the ankle joint and they both have an attachment
to the lateral malleus which you can see here but they their fibers don't intermingle
quite as much as what you have on the medial side or the deltoid side so not quite as protective as
what you have on the medial portion of the ankle joint all right excellent so thank you for your
time and attention here we have finished off our joints for the msk portion and now
we are going to move into the muscles of the lower limb so i'll see you at the next station