 So what is up our supra-lateral boundary? So can you see the biceps femoris here? You are recording me? Okay, go ahead. So this is the biceps femoris. And you can see it is getting inserted onto the head of the fibula here. Okay. What was the supra-medial boundary? Okay. Okay. Semi-membranosis is deep and going inside, and medial. See, this is the semi-membranosis. This is the semi-membranosis. It was attached here. Only thing is because the muscle was quite friable. So when I was dissecting it, it came off. But it was inserted here. It is inserted onto the medial tibial condyle, main insertion. And then it gives an oblique-copletial ligament, if you remember. But we have removed that. So this is the semi-membranosis here. And sitting on top of the semi-membranosis, a tendinous structure, can you see the semi-tendinosis here? Yes. It goes further down. And where does it get inserted to? On the... Onto the anterior medial surface of the upper tibia in sartorius, resins, semi-tendinosis. So this is the insertion of the semi-tendinosis at the goose-foot, goose-feet here. Since we talked about gracilis, this is the gracilis. But this is not a muscle of this compartment. It is a muscle of the medial compartment. Can you see it's a... Why is it called gracilis? Because it's a graceful tendon. It will be delicate. That's why it is gracilis. And that's why we say clinically it is useful only for... For rectal incontinence. Yes. So we have seen the supralateral boundary. Semi-tendinosis, semi-membranosis. And we have seen the insertion of this, insertion of that. What was the intramedial boundary? I know. It's strong. So can you see the medial head of the gastrochemius here? Okay, open the door a few more times. I know. You slowly get used to it. Open the door. You get used to it. Don't worry. So the intramedial boundary, the medial head of the gastrochemius. And the infrolateral boundary? That's right. The lateral head of the gastrochemius. Okay, so this is one apex of the... This is the other apex. Okay, going right through from one apex to another, can we see something here? Yes. This is the... Shatic nerve. Normally the shatic nerve should divide at the junction of the upper two-thirds and lower one-third. But here it is dividing a little lower down. And this is the shatic nerve. It is continuing as the tibial nerve. And this is the common fibular. The common fibular runs under cover of the bicep femoris. And then it comes around and winds around the neck of the fibular here. And just now we mentioned in the class, it becomes the superficial and the deep rise. So this is the superficial fibular, which comes here. Okay. So this is the tibial. We will talk about the tibial on Monday when we talk about the posterior compartment. So this is one content of the... In the morning, I was not getting so much, but now I'm getting the... because it was collected there. Stick one... So this is one content of the shatic... Shatic. ...populital fossa. Now let's take a look at another one. These are some branches. So you have already guessed it. This one. This is the popliteal artery. And you can see where does the popliteal artery... become the popliteal artery. Can you see the adductor hiatus here? My finger is gone inside it. This is the adductor magnus. This is the hamstring part of the adductor magnus, which is inserted on the adductor tubercula. Can you see this opening here? So from here, the femoral artery came through and came on the posterior side and became... It became the popliteal artery. The next few pictures are diagrammatic representations of the same dissection with clearly labeled structures. Please go through them carefully and note down all the structures that we have discussed just now. Thank you for watching and have a nice day. This is Dr. Sanyal signing out.