We can see that here. Now,
we look at the anterior leg.
Here, we can pick up the anterior tibial artery.
This is going to be formed again at
the inferior border of popliteus as the popliteal
artery bifurcated. It passes through the superior
aperture and then runs down deep within the
anterior compartment of the leg. Eventually,
it will come and give dorsalis pedis as its
direct continuation. So the anterior tibial
artery, it provides arterial blood to the
anterior compartment of the leg and the dorsum
of the foot. It passes deep through the superior
aperture of the interosseous membrane to enter
the anterior compartment, and this descends
along the anterior border of the interosseous
membrane. At the ankle joint, between the
two malleoli, it becomes the dorsalis pedis
artery and supplies the dorsum of the foot.
But we can also see, as it’s running down
here, we’ve got this perforating branch
of the fibular artery. So the perforating
branch, the fibular artery, enters the anterior
compartment and goes onto the dorsum of the
foot through the inferior aperture of the
interosseous membrane. And here, there’s
the potential for anastomosis between the
anterior tibial and the perforating fibular
artery, again, allowing continuous blood supply
if some arteries were to be compromised.