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Adductors, peanut butter leaves me greasy.
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What? What did he just say? My favorite acronym in all of anatomy, peanut butter
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leaves me greasy. Pectineus, adductor brevis, adductor longus, adductor Magnus and
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gracilis. These are more or less in order of attachment on the femur to. Till here
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and then its attachment on the tibia, but you guys get what I'm saying. So the
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adductors kind of go like this, they kind of splay out, each one getting a little
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longer than the last one, as you can kind of see in this picture. Anybody have a
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dog, have you ever fed a dog peanut butter? So I had this dog growing up
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named Amigo he was a great dog, he was a 40-pound rich Chihuahua. No I know that would be a
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monster Chihuahua. Dingo is my only monster Chihuahua, 22 pounds. He was a,
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Amigo was a retriever lab mix with one ear up and one ear down all the time,
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super super cute dog. But I had this thing when I was in high school, he used
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to love to come home and have peanut butter on a bagel. Has anybody ever had
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peanut butter on a bagel, delicious, delicious. Super high in calories too, which is
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probably why I enjoyed it so much as I was growing a lot in high school right.
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But amigo would always beg for the peanut butter, always beg for the peanut
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butter, so what did i do? You know exactly what I did. I did the nicest and meanest
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saying I could ever do to amigo, I took a big finger full of peanut butter, right
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behind his teeth; because what did it do?
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He walks away with his tail wagging, like 20 minutes later tail not so wagging
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anymore, still sucking on the back of his teeth, and my when, as soon as I saw
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peanut butter leaves me greasy, I don't remember where I got this, that was the
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first thing I thought of, is poor Amigos greasy little mouth and I'm trying to
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get that peanut butter out of his back teeth. He was happy for most of it, it was
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just at the end he would start getting a little annoyed. Alright so hopefully that
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helps you guys remember your five - pectineus, brevis, longus, Magnus, gracilis,
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adductors; and if you remember them in this order, it does become a little
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helpful to remember which ones do what actions. So being that these are called
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the adductors, what do we think they probably do? I'm going to guess a
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adduction, just a thought.
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I don't have a pelvis over there, oh I do have a pelvis over here. This is your
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pelvis alright, and then this pelvis is broken too, it's got a lot of broken
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bones around here alright. So can you guys see how the pubis for the most part
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lies in front of the hip, guess where most of the adductors start, pubis
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right so they all go from pubis to femur; which means they'll probably contribute
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to a little bit of what? Good call, as well as a little bit of flexion right,
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because they're in front of the hip. So they'll contribute a little bit
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flexion, a little bit to internal rotation, as well as a whole lot to
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adduction. Have a spine.
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So we start there, this is what the adductors do, all of them, I guess I'll
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write down a little nicer, but we have a couple with some special functions. the
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gracilis is the only adductor to cross the knee, all right and it crosses behind
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the knee and attaches to the inside of the tibia. So other than these the
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gracilis will also contribute to what? If it goes behind the knee then it
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contributes to? Knee flexion. If attaches to the inside of the tibia? Tibial
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internal rotation.
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Nice job, we only have one more addition to this. And it's the muscles so big we
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literally have to divide it in two. Magnus means big right, like that's what that
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word means. Anybody watch the strongman competitions? You guys remember Magnus
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Ver Magnuson. I'm like really, your name is big ver son of big. That's literally
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what your name translates to, and you're a strongman competitor, go
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figure right. But you're adductor Magnus is kind of the same thing, it's huge. So I
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talked about most of your adductors attached to your pubis. This is your
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ischium right, you're adductor Magnus is so big it goes from pubis to ischial
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tuberosity. So you have a group of fibers that run in front of the hip, and then a
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posterior head that actually runs behind the hip right, you guys with me. So the
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anterior portion of the adductor Magnus we're fine with, however we have to make
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like a note here that the posterior adductor Magnus if it goes behind the hip,
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what is it going to contribute to? Extension and external rotation, is it
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still going to contribute to adduction? Yes it's an adductor,
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fair enough. Has anybody ever felt there aductor Magnus before, soreness. This is
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actually a very common place, we'll talk about it a little bit when we get to
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postural dysfunction; where somebody will do leg workouts and they'll continuously
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get sore and like the back of their inner thigh, not their glute the back of
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their inner thigh, and what that generally means is they're adductor
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Magnuss is working harder than it should, and who's not working as hard as they
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should, the glutes exactly. Alright flexors and extensors of the hip. Alright
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so hip flexion and extension,
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who does flexion? Who else does flexion? Psoas, iliacus, TFL, rectus femoris, glute min
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nice call, adductors everybody except
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posterior head of addductor magnus which goes over here.
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Alright who else does extension, who's the big one? Glute Max.
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You're going to have to name those. So I'm going to end in fact let's break it
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all the way down hamstrings, medial are,
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here's what I hear from you guys it's like semitendinosis, so that's semi
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tendinosis, semimembranosus and then who's my lateral? Biceps femoris. For
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another exciting graph, oh maybe not that far, but hip internal rotators? TFL good
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call, gluteus minimus, not medius, adductors,
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medial hamstrings good,
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pectineus is part of this adductors right. So this is PBLMG -pectineus. What
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was that? Anterior, yeah that would be here, which means if anterior Magnus as
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well as all the other adductors are here, who's here? Posterior.
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Yeah let's let's just leave piriformis as an external rotator, that's kind of like
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somebody said gluteus medius, well technically gluteus medius has anterior
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and posterior fibers and the anterior fibers do internal rotation, what we need
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to worry about is the posterior fibers that get weak, and our external rotators
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and are probably in need of a little work. Medial hamstrings all right so lets
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name those -semimembranosus,
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semitendinosus.
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Good if psoas is up here, who else should be iliacus? Who are we missing? Biceps femoris.
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Yeah if you really want to get technical somebody said it's the long head of the
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biceps femoris, I heard somebody started. Yeah so the deep rotators would go on
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this side which is actually piriformis, gemellus superior and gemellus inferior,
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obturator internus and externus, quadratus femoris. Yeah you got it in your
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notes. Glute max good call. We'll also put glute medius, sartorius where does sartorius go?
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Nice job guys.