Pubis (Pubic Bone)

00:01 So now let's have a look at the pubis or the pubic bone.

00:05 It's the final of the three bones that make up the pelvic bone.

00:11 So let's have a look at the lateral surface of the pubis.

00:14 And it's important to orientate ourselves.

00:16 So we've got a couple of familiar landmarks.

00:18 We've got the acetabulum there, and then we've got what we'll later realize is that hole which is the obturator foramen.

00:24 But really you can see this C-shaped pubis is projecting anteriorly.

00:29 And here you've got the body of the pubis, which will go on to form that attachment with the body of the pubis on the other side in the anterior aspect is it attaches to the pubic symphysis.

00:39 Superiorly radiating towards the acetabulum, you've got the superior pubic ramus and then radiating inferiorly towards the ischial bone, you've got the inferior pubic ramus and they together form that C shaped around the anterior aspect of the obturator foramen.

00:56 If we look at the surface, this anterior view, we've got this anterior surface here, and then we've got this attaching to the pubic symphysis immediately as that then adheres to the other side of the hip bone.

01:11 Here we're looking at the anterior surface, like I said, and you can see the pubis highlighted in green inferiorly working posteriorly you'll find it coming with the ischiopubic ramus, the inferior version.

01:23 Here on the opposite side of what you can't see the moment we've got the posterior surface.

01:28 And then if you're looking at the medial surface here, or the inner view as is indicated, you can see medially you've got the symphysial surface, that's where it's adhering to the opposite pelvic bone on the opposite side, most anteriorly you've got the pubic tubercle important when we spoke about the formation of the inguinal canal.

01:48 And then you've got a line that runs all the way up towards the ilium, the pectineal line and then the arcuate line and that's running along the superior pubic ramus which you can see there.

01:59 Here we have the obturator foramon.

02:02 The obturator foramon is that space that's sitting inferior to the acetabulum.

02:07 And here in this diagram, it's very nice because you can actually see the various bones and the structures of those bones that form that obturator foramen.

02:15 So most anteriorly you've got the pubic body going up towards the acetabulum, we've got the superior pubic ramus then coming in fairly underneath the obturator foramen and you've got the inferior pubic ramus, the ischial ramus and then the ischial body, forming the circle of bones that creates that opening the obturator foramen.