hey everyone this is Ben with registered nurse are ENCOM and in this video I'm gonna cover the anatomy of the tibia and fibula bones of the anatomical leg which is that area between the knee and the ankle and these bones are part of your appendicular skeleton and if you get these two bones mixed up here's a quick way to remember them just remember the phrase never tell a little fib and little fib will help you remember that the fibula is the smaller of the two bones and also little starts with the letter L and that can help you remember that the fibula is always going to be on the lateral side of the leg and in this picture we're looking at the bones of the right leg and the image on the left represents the anterior or front view and the ones on the right represent the posterior or back view of these bones and first you'll notice this webblock structure called the interosseous membrane or middle tibiofibular ligament as it is also called and the prefix inter means between and osseous refers to the bones so this is literally the membrane between the bones and this membrane keeps the tibia and fibula bones together and provides strength and stability for them it also separates the muscles on the anterior and the posterior parts of the leg now let's take a look at the tibia bone which is the larger of the two bones located medially and when you feel your shin bone that's what you're going to be feeling in fact this bone gets its name from a latin word that literally means shin bone and its larger size allows it to transfer weight from the femur to the foot starting at the proximal end or the top of the tibia you'll notice that it widens out from the shaft and forms a medial and lateral condyle and again a condyle is just a rounded projection on the bone that is going to articulate or form a joint with something and medial and lateral or directional terms medial again means toward the midline lateral means away from the body's midline and on the top of these condyles you're going to notice a concave surface which you can see when you look at the posterior view of the tibia and these are called the articular surface of the medial and lateral miles in this area is going to articulate with the medial and lateral condyles of the femur or thighbone forming the tibia femoral joint and between the articular surface of the medial and lateral condyles is an area called the intercondylar eminence and this structure includes a left and right cubicle which kind of resembles tiny horns and fossae to which the man in Chi and the cruciate ligaments attach now between those condyles and the shaft of the tibia you'll notice a bump on the anterior side called the tibial tuberosity and that's all a tuberosity is it's a fancy word that means a bump or a small rounded area and this structure allows for the attachment of the patellar ligament now below that tibial tuberosity we have the triangular shaft of the tibia which contains three borders and three surfaces and you'll notice that the anterior side of the tibial shaft forms a pointed border called the anterior crest and this area forms that hard shin area of the leg and it allows for the attachment of the deep fascia next we have the fibular notch which is a depression that allows for the attachment of the fibula bone forming the distal tibiofibular joint now the distal end of the tibia will transfer weight to the foot at its articulation with the tailless bone forming that ankle joint and this is just called the articular surface of the tibia and then finally on the medial side of the tibia is distal in there is a rounded bony area with a projection called the medial malleolus malleolus comes from a Latin word that means a little hammer and this area articulates with the talus bone of the foot and this is the bony area that you're going to feel on the inside of your ankle and it can serve as a landmark when you're locating that posterior tibial pulse point as nurse Sara indicated in one of our videos now let's take a look at the fibula bone and unlike the tibia bone the fibula is much smaller and it is not a weight-bearing bone however it is going to allow for the attachment of various muscles so let's take a look at some of the important structures on the Phoebe and starting at the proximal or top into the fibula you'll notice the larger head and this is going to articulate or form and join with the lateral condyle of the tibia bone forming the proximal tibia fibula join and it also provides attachment for the biceps for Morris and fibularis and longest muscles as well as various ligaments next we have the shaft of the fibula which is thin and ridged and this is going to allow for the attachment of various muscles of the leg and then finally toward the distal end of the fibula we have the lateral malleolus which forms the bony part of the outer ankle and like the medial malleolus this is going to articulate or form a joint with the talus bone of the foot and it's going to also allow for the attachment of various ligaments and one thing you will notice is that even though the fibula bone is smaller and thinner than the tibia bone the lateral malleolus of the fibula is actually larger than the medial malleolus of the tibia okay so that wraps up this video over the tibia and fibula bones of the leg and we have a free quiz that you can check out on our website by clicking the link in the description or comment below also we have an entire Anatomy playlist of videos covering bones and various structures so you might want to check that out thank you so much for watching and please subscribe