- Hello massage nerds.
Today I am attempting to do lesson seven.
The reason I say attempting is cause this is my second try.
I tried doing this with another friend of mine
and it was just such a mess.
It was just too many muscles.
So today I'm going to do it.
I drew the muscles on myself
and I think that this might work out better.
I wrote them down to make sure I don't forget any of them.
So we're going to be focusing on the muscles
of lesson seven, which is flexion of the wrist
and of the digits.
Extension, flexion, abduction and adduction.
So let's start with a few rules just to remind you guys
that the flexors are on the side where there's no hair
and the extensors on the side where there's hair.
Another thing to remember is I drew the brachioradialis here
in black, however, this is not part of this lesson.
It's actually part of another lesson
because it's actually a elbow flexor.
So today we're just doing wrist flexors.
However, the reason I drew it here,
because this really differentiates the flexors
from the extensors.
So if you wanna, you know, palpate for the brachioradialis,
if you push down on your client, have them, you know,
push up, it pops up really nice.
So you'll be able to see it really good.
And so that way you can tell the difference
between flexors and extensors.
So let's start with the flexors, which, you know,
most of them or originate at the medial epicondyle
of the humerus.
This is the lateral condyle of the humerus
where they originate and this is the medial epicondyle.
This is where you get golfer's elbow.
If somebody comes in, they're diagnosed with golfer's elbow,
it's all these origins right here.
And you can see, you know, there's so many of them
and the lateral side on the lateral condyle of the humerus
that originate there, that's tennis elbow.
And you can kind of tell, you know,
because so much impact would go to the forearm.
And also, let me talk,
I'm going to be talking about some of the ones
that I didn't draw.
I didn't draw the pronator terese,
and I didn't draw the pronator quadratus
because they are for pronation. Correct.
And we're only talking about flexion and extension
and abduction and adduction today.
So the pronators teres goes right through here
and the pronator quadratus right here by the carpals.
And actually the reason I want to bring up
the pronator terese is because a lot of times,
the median nerve gets trapped right here
and puts pressure on it and can cause numbness
and tingling of the hand.
So the only nerve that goes
through the flexors right through the carpal tunnel
is the median nerve.
So the median nerve, you know,
comes down and goes through carpal tunnel.
Now there's nine tendons
that also go through the carpal tunnel,
except for the palmaris longus.
The palmaris longus is this purple long skinny one
that looks like a little tall palm tree.
And if you flex your wrist and touch your fingers,
your palmaris longus pops up.
If you see a tendon that pops up right there,
that's your palmaris longus, and only 75 people,
75% of the population, it pops up on them right there.
So the other 25, believe it or not, don't have that.
So let's start now with, let's start naming them all
and I hope I can remember, please bear with me.
There's just so many.
So we have eight here
and four are superficial.
One is in the middle and three are deep.
So four minus one is three.
So that way you can remember the eight.
So four superficial, what in the middle, three deep.
So let's start with a flexor digitorum profundus.
Remember if you have profundis,
then you have one that's superficial.
So this originates right here at the epicondyle
of the humerus and it goes to all the digits,
cause that's why it's called digits, you know,
to the distal, this is the proximal phalange,
middle phalange, distal phalange.
The farthest away from you is the distal,
the closest to you that's, you know, your proximal.
So here's the flexor digitorum profundus,
and it's pretty wide.
So I drew the outer edge on it right here,
you know, just the orange one.
Okay. So then you have your flexor digitized superficialis.
Okay. So that would be the purple one here.
And so that's more superficial.
You have your flexor carpi radialis.
Flexor because it flexes,
carpi because it goes to the carpal,
and then you have your carpi ulnarus
cause it goes to the ulnar side
and we see the pulmarus longus.
The flexor carpi...
Did I already say that?
Yeah I did.
Oh, I know the flexor pollicis longus
originates on the lateral side right here
or medial side of the radial bone.
So it goes from the flexor pollicis longus from here
and it pollicis because it goes into the thumb.
Remember, this is your pollux.
So you have a muscle that flexes the thumb
that lets you do this.
And then if you have a pollicis,
if you have a flexor pollicis longus
then you have a flexor pollicis brevis,
otherwise the longus part word would not be in there.
So the flexor pollicis brevis is right here.
Okay. And so this one also flexes the thumb.
I didn't draw the opponens
and that's actually a very important muscle
because it's right here in the same place
as the flexor pollicis brevis
and it will be underneath.
And it's the very important muscle.
Cause it's the one that lets you do opposition.
Opposition means that we can touch each finger opposite.
You know, like our pinky, this is very important.
You know why?
Because this is what differentiates us from monkeys.
If you can do this,
this is what helps us to be able to grasp, you know,
to be able to grasp and to be able to make tools.
That's what evolved us.
And also to be able to type, you know,
I know all of you spend a lot of time,
you know, on your computer.
So this opponens is a very important muscle.
So then we've talked about the eight here.
Remember they are on the part that has no hair
and oh, the two that I didn't talk
about is the pronator terese
and pronator quadratus,
which is right along here
because that's for pronation.
So if you're holding a bowl of soup,
that's supination,
cause you're on the dorsal side of the hand.
You spill the soup, that's pronation.
So those two muscles, pronator quadratus
and pronator teres are the ones for pronation.
Then you have your supernator for holding onto the soup.
So now let's move on to the extensors.
Remember that these are going to extend the wrist.
These are going to flex the wrist.
So you've got right here.
Let's start right here.
Let me see if I can remember the extensor ulnaris
carpi ulnaris because it goes to the ulnar side,
extensor carpi radialis 'cause it comes to the radial side,
just at the carpals.
Then you've got your extensor pollicis longus.
And that one originates right here on the medial part
of the radial bump.
So the of extensor pollicis,
because it goes to the thumb site.
Longus, it goes all the way to the distal phalange
and the extensor pollicis brevis
originates a little further down
and it only goes to the carpal metacarpal joint.
And then you have, let me see what else,
which one is this one here?
I have to look at my notes.
The extensor indicis. Oh, extensor indicis.
It goes all the way to your index finger.
So this finger has one all for itself.
So this is the extensor indicis.
Goes all the way to the distal phalange.
And then you have your extensor minimi
which goes to the minimus, to the pinky.
Okay. And then you have your extensor digitorum,
which goes to each digit except for the thumb.
So you have plenty of extensors
that are originated right here at the condyle,
lateral condyle of the humerus
and then all of these originate at the epicondyle
of the medial humerus.
So these, remember these are extensors.
There's hair here.
These are flexors. Okay?
So now let's talk about the movements.
The movements of the wrist are flexion, extension,
abduction away from the midline,
and then you're adding it back to the mid line.
So for the flexion, well I'll go ahead and read them.
But for the flexion you would be your
flexor carpi radialis, flexor carpi ulnaris.
Palmaris longus.
The flexor digitorum superficialis
and the flexor digitorum profundus.
For the extension, that will be these muscles
tightening up and these loosening up.
Remember you have your agonist and your antagonists.
So these will be the agonist,
you know, for the extension.
And these now become the antagonist. Okay?
So for the extension,
you would have your extensor carpi radialis longus,
your extensor carpi radialis brevis,
your extensor carpi ulnaris,
and your extensor carpi digitorum.
And so now for abduction,
taking it away from the midline,
abducting it, you have your flexor carpi radialis,
your extensor carpi radialis longus,
and your extensor carpi radialis brevis.
And if you're gonna add it back to the mid line,
then you would have your flexor carpi ulnaris
extensor carpi ulnaris.
So they're on the ulnar side.
To add, remember, these muscles are going to pull here
to add a back.
So kind of start, you know,
I always tell you guys to think about
how muscles are laid out.
If they're on this side, then they're going to flex.
If they're on this side, then they're gonna, you know,
these muscles are gonna pull to extend.
So, oh, I don't want to forget about the ligament,
the, you know, the ligament,
the transfer carpal ligament right here.
It helps to keep the tendon steady.
And then you have your palmar aponeurosis.
I try to dry it with white eyeliner.
And it just made me look like I have my hands peeling,
so it didn't work.
But anyway, that the palmar aponeurosis, you know,
attaches, it's an extension also
or attaches to the palmaris longus, you know?
And it it's all over the palm and remember,
aponeurosis is a flat sheet tendon.
So there you have it.
This is all the muscles of the forearm.
There's a lot of them.
I encourage you to watch a video that I made
on the muscles of the forearm.
And this is for people that have carpal tunnel syndrome,
you know, to show you, you know,
how to treat each one individually, you know,
by doing the long strokes
and the trigger points
and extend, you know,
cause I'll have had a lot of people that,
you know, come in with carpal tunnel syndrome.
And if you can release the flexors and extensors,
they really notice a difference.
So again, this is lesson seven,
muscles of wrist and finger flexion
and extension, abduction, and adduction.
This will be your homework, get busy.
You don't need a body for this one,
try to draw them on yourself,
at least so that you guys know,
have an idea of how many muscles we have here.
There's approximately 16 to 20.
I can't remember exactly 'cause, you know,
there's just so many of them.
But anyway, to me, this is the most complex one,
the forearm.
And you know, this is why we can do so much, you know,
manual, you know, specific work.
So get to it, draw your arm
or draw on a body.
And I hope this really helps you.
And don't forget to subscribe to my YouTube channel,
hit the notifications button
and leave me comments.
I really enjoy the comments, guys.
So until next time, create a great day.