Lower Limb.8 - Lateral side & front of the leg

Now, this is the lateral malleolus, the limb of the other side and this will be the peroneus longus and deep to it there is the peroneus brevis and passing between, them there is the superficial peroneal nerve that supplies them (this is the superficial peroneal nerve). And, both of them pass behind the lateral malleolus to go into the foot and therefore they take the foot up to the fibula and that's we call eversion. Now, when we go to the "anterior group" , as we agreed that the tendon in this group pass between the two malleoli (they pass between the medial and lateral malleolus) and they are 4 muscles. Three, of them arise from the anterior surface of the fibula and only one muscle arises from the lateral surface of the tibia. This is the medial surface of the tibia which is subcutaneous (as we know that the lateral surface of the tibia is subcutaneous and the medial surface gives origin to this muscle). This, muscle is called the tibialis anterior, this muscle that arises from the tibia is the only muscle of the anterior group that arises from the tibia (of the lateral surface of the tibia) and it goes down to become inserted into the base of the 1st metatarsus and the medial cuneiform like the peroneus longus, (this is the tibialis anterior). The, other muscles arise from the anterior surface of the fibula, and one goes to the big toe, this tendon will go to the big toe, it's called the extensor hallucis longus. And, the other will have a tendon that divides into 4. and, these 4 tendons will become inserted into the other toes (all the toes except the big toe). And the last one will be very lateral that passes anterior to the lateral malleolus. ("this one" passes anterior to the lateral malleolus, "this is the lateral malleolus"). To become inserted into the base of the 5th metatarsus, like the peroneus brevis, it passes anterior to the lateral malleolus and become inserted to the base of the 5th metatarsu and is called the peroneus tertius. Therefore, the anterior group from medial to lateral: we have one arises from the tibia "tibialis anterior" and three arise from the fibula, from the anterior surface of the fibula. And one one goes to the big toe that is called the "extensor hallucis longus", the next goes to the other toes and is called the "extensor digitorum longus" and the last one goes to the base of the 5th metatarsus and is called the "peroneus tertius" which, is the third peroneal muscle. And, between these muscles we have a nerve which is a deep peroneal nerve and anterior to it we have the anterior tibial vessels, (these are the anterior tibial vessels). So, the nerve is superficial to the vessels, the nerve is very thin, while the vessels are thick. All, these muscles as they arise from the tibia and fibula and inserted into the foot, therefore they take the foot up to the fibula and tibia and that's called dorsiflexion, so they are the muscles of the dorsiflexion, but the most medial one helps in the inversion that takes the foot to the tibia and the most lateral one helps in eversion that takes the foot to the fibula. When, we take the foot up to the fibula, this is called "eversion" and when it's taken up to the tibia, this is called "inversion". And we take the foot up directly towards the leg , this is called "dorsiflexion". This finishes the anterior group