 This is going to be a quick demonstration of the muscles that we can see here in the anterior aspect of the thigh. Though not all of them are anatomically in the anterior aspect, but we will show all the muscles. Muscles that we can see here in the anterior compartment is this muscle here. This is the rectus femoris which takes origin by two heads, a direct head from the anterior inferior spine and a reflected head from just above the acetabular. And it's called rectus because it's running straight femoris because it runs in front of the femur and it merges with the quadriceps tendon. The next muscle that we see here is this muscle on the lateral aspect. It takes origin from the linea aspera and comes immediately. This is the Vastus lateralis, the largest of the quadriceps muscle. Deep to the rectus femoris, we see this tendinus and fleshy portion here. This is the Vastus intermedius which takes origin from the anterior surface of the femur where my finger is going. And finally, immediately we have this muscle here. This is the Vastus medialis which also takes origin from the linea aspera and comes immediately. So these four muscles, rectus femoris, Vastus lateralis, Vastus intermedius and Vastus medialis, they are part of the quadriceps which fuses at the quadriceps tendon which gets inserted onto the base of the patella. So and this is the most powerful extensor of the knee. It is three times as powerful as the antagonistic muscle that is the hamstrings, which is the flexor of the knee. The rectus femoris, because it's coming from above the hip joint, it also has action of flexing the hip. So therefore, this is also referred to as the kicking muscle. Because this is the position that footballers use when they flex the hip and they flex the knee and they vigorously straighten the knee to kick the ball, they use the rectus femoris. Injury to the rectus femoris will compromise the function of the quadriceps by 17 percent. So these are the quadriceps muscles. This is the sartorius, tailor's muscle. The other anterior muscle is this one here in the floor of the femoral triangle, this muscle. This is the pectinus. It takes origin from the pectin pubis and it gets inserted onto the pectin line of the femur. This has got flexion of the hip as well as adduction of the hip. The pectinus is a dual muscle. So therefore, it is supplied by femoral nerve. It is also supplied by an operator nerve on the medial side. The sartorius and the quadriceps are also supplied by branches of femoral nerve. Now I will show you some of the muscles, though this is an anterior dissection, but we can see some muscles of the medial compartment, the rectal compartment. This muscle that we see here, this is the rectal longus. It takes origin from the body of the pubis and it gets inserted onto the middle one third of the linear aspera and we can see that. This forms the medial boundary of the femoral triangle. In long term riders, they can be true to be bone formation here and that is known as rider's bone. Just medial to that, we have this muscle here. This is the adductor brevis, which also takes origin from the superior areas of the pubis and gets inserted into the upper portion of the linear aspera. When I reflect this, then I can see a muscle deep inside. We can see only a little bit of that muscle here and further deep inside. This is the adductor magnus. The rector magnus takes origin from the HQPP grammars and it gets inserted onto a large part of the linear aspera. That is the adductor component. The rector magnus also has got another deeper component, which we cannot see in this view. That is known as the hamstring component, which takes origin from the HQPP and gets attached to the rector tubercle. The rector magnus gets supplied from the operator nerve, which is the rector component and the hamstring component gets it all supplied from the tibial division of the sciatic nerve. Then we have this muscle here, which I have lifted up here and we can see this muscle here. This is the gracilis. The tendon is very thin and graceful and this tendon of the gracilis, the tendon of the sartorius and a muscle on the back of the thigh called the semi-tendinosis, these three together get inserted onto the upper end of the tibia in an insertion called the pesanserinas or the goose foot, which looks like this. This is a still shot from another section showing all this hand holding up the tendons of the pesanserinas. This gracilis muscle does not have much of an adductor function, however it is used in surgical practice for repairing an incontinent anal sphincter. Now let me show you the neurovascular structure coming out from the medial compartment and for that we have retracted the adductor longus and we have lifted up the adductor brevis to show this structure here. This is the operator nerve and the operator artery. This is the operator nerve and the operator artery and if you look here my finger has come through the operator foremen. So the operator nerve and the operator artery comes from the pelvis through the operator foremen and for better clarity I am going to put my instrument here to show it is coming here. So this is the operator foremen and through that they come to the thigh. It runs initially between the adductor magnus and the adductor brevis and then it runs between the adductor longus and the adductor magnus and we can see here the rest of the operator nerve and the operator artery and they are the ones which supply the muscles of the medial compartment. The operator nerve also gives the branch to the pectinous muscle. The pectinous is a dual muscle. The operator nerve also supplies a little bit of the skin of the middle one-third of the medial side of the thigh. This is going to be a demonstration of the adductor canal, its boundaries and its contents. The adductor canal is 15 centimeters long. It starts from the apex of the femoral triangle and ends at the adductor hiatus which enters into the bopidial fossa. The adductor canal is roughly a triangular canal in cross-section. Diagramatic representation to show you the adductor canal in a cross-section. Entromedially, it is bounded by the sartorius and we can see the sartorius. We have repositioned the sartorius in its normal anatomical location. And just under that, under the sartorius, there was a thin layer of fascia which is referred to as a sub-sartorian fascia. We have removed that. This is the entromedial boundary. Then we have the antrolateral boundary where my finger is tracing. And for that, I will retract the sartorius to show the entrolateral boundary. The boundary is this muscle here. This is the vastus medialis. And posteriorly, we have this muscle here. This is the adductor longus. So, if I want to again put it back, the place where the sartorius overlaps the adductor longus, that is where the adductor canal begins. So, it begins at the apex of the femoral triangle which is here. This adductor canal gives passage to the following structures going from anterior to posterior. The first content, anterior most content, is this one here which we have picked up. This is the longest cutaneous branch of the femoral nerve. This is the femoral nerve which I have lifted up here. And we can see a branch coming from here all the way. This is the syphilis nerve. The syphilis nerve, it runs through the adductor canal and then it pierces through and it accompanies the long syphilis wing and it supplies the skin of the medialis at the leg and the foot along with this long syphilis wing. The next structure in the adductor canal is this artery here. This is the femoral artery. And we have picked up the femoral artery here. And just behind that is this structure here. This is the femoral wing. So, going from anterior to posterior, we have the syphilis nerve, the femoral artery, femoral wing. The next structure that we can see is the, which I have picked up here, but this does not go outside the adductor canal. This is also a branch from the femoral nerve and it goes and it supplies the vastus medialis and we can see that. So, this is the contents of the adductor canal. The adductor canal gives passage to the structures from the femoral triangle to the rest of the thigh and beyond. So, this is the surgically and clinically important landmark called the adductor canal. Thank you very much for watching. Dr. Sanjay Sanyal signing out. If you have any questions or comments, please put them in the comment section below. David O is the camera person. Have a nice day.