- Hi, I'm Bob Schrupp, Physical Therapist.
- Brad Heineck, Physical Therapist.
- [Bob] We got the most famous physical therapists
on the internet
- [Brad] In our opinion, of course, Bob.
- [Bob] Brad, you wanted to show us how to do the
90-90 test for measuring hamstring.
- [Brad] Right. Hamstring, flexibility.
How tight are your hamstrings, and if it's part of a problem
therapist will do this test quite frequently
to get a measurement.
So they, they can compare it one side to the other
or maybe measure your flexibility and say
go stretch your hamstrings for two weeks
come back and we'll measure it again
and see if we got some improvement.
- [Bob] So it can give you some motivation.
So you can actually see the numbers?
- [Brad] Exactly. Okay.
- [Bob] Okay.
- [Brad] So the hamstrings from behind-
from behind the knee to the buttock,
to the Ischial Tuberosity
we've got three muscles in there.
They can get tight, commonly injured.
This is also a good way to check it
after an injury and see how it's going in a pain free range.
So to do this, a person lies supine
or on their back on the table, comfortably with a pillow
I'm gonna measure the right leg.
So the left leg,
I always like to keep it flat and down. Okay?
I instruct the patient, put your hands like this
and clasp them, but I want you to do that behind your knee.
Okay? Now your job is to,
I'm telling the patient this,
your job is to keep your knee and leg
perfectly plum or vertical.
Okay? So, we're looking at the femur being vertical.
So, that's why it's called the 90-90 test,
'cause here's a 90 degree in the hip
and a 90 degree in the knee.
So, it's hamstring 90-90 test.
Alright, I'll need my specs on so I can see what I'm doing.
And with the goniometer,
I'm gonna line it up with the hip and the knee.
And we've got a video coming up on how to properly
use the goniometer, but we won't get into that now.
And what I'll have,
Bob, put your hands back up where they were.
And he's gonna actually hold that a little bit,
so I can let go and I can write something down
if I want to for the measurements.
Now, Bob, I'm gonna have you lift up
and I'm not gonna help push on this.
He's gonna go as far as he can.
He feels a stretch.
If he goes so far and he starts moving...
Stretch these, Bob.
Yeah. And he starts changing this vertical:
that's no good.
- [Bob] Sorry.
Sure. This has to stay still.
Yep. And I'm gonna go from here to here and right there
Bob is at a 46.
Okay? Now I'll jot that down.
Right leg in 90-90, put the date, 46 degrees.
- [Bob] Can We check the other side?
- [Brad] You wanna check it?
- [Bob] Yeah, let's see if it's...
- [Brad] Flip around. Let's see what Bob has.
46 degrees, I don't have the norms for this today
but 46 degrees is a little on the tight side by the way.
- [Bob] Oh gosh.
(both chuckle)
- [Brad] Okay. Now let's see if he's symmetrical,
one side to the other. Okay? Go ahead.
Lock it up or are you waiting for me to get this in there?
- [Bob] Yeah.
- [Brad] Oh, thanks Bob.
All right. Okay. Line it up with his lateral malleolus.
Oh, what does it look like to you guys, huh? 36.
Oh my God, you're right is 10 degrees tighter
than your left.
(Bob groans)
- [Brad] Oh, now I would suspect
that there was a injury or maybe you had a hi-
a history of injury in one of the legs. The tight one, no?
- [Bob] Nope, no injuries.
- [Brad] He probably just doesn't
remember it 'cause he's getting old.
- [Bob] That's right.
- [Brad] But anyway...
- [Bob] I probably fell and broke my femur.
- Yeah, this is a really nice test.
Now I know the flexibility of both hamstrings.
Bob, I want you to go home and stretch.
I might have the patient maybe do this stretch
or there's five or six different ways to stretch
your hamstrings- whatever the therapist thinks.
Stretch three times a day, come back in two weeks.
We're gonna measure it again.
And the number should go down.
Why don't you lay down again, Bob
As the flexibility increases, you notice he is 46
on the tighter leg.
And as the leg goes up, we're going closer to zero.
So, if someone was really flexible and they went straight up
that would be zero degrees.
So the bigger, the number, the tighter, the hamstring.
- [Bob] Gotcha.
- [Brad] All right, so-
- [Bob] Now that, now that you revealed
I have tight hamstrings on film. I'm really happy Brad.
- [Brad] All over the world, they're gonna know, Bob.
So, if you wanna learn more things
on how to measure, again, goniometer measurements coming up:
keep subscribing and looking at us and you know, tell
tell your friends and even your mom, too.
- [Bob] Thanks a lot.