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Ankle Joint Actions

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Ankle joint actions are multi-directional actions of the ankle joint, which allow for movement, stabilization, and balance of the foot. They provide flexibility, mobility, and stability by allowing for inversion, eversion, plantar flexion, and dorsiflexion. Ankle joint actions are essential for performing everyday activities such as walking and running, but also for sports and other recreational activities.

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Transcript

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Hate when they do this, we learned all
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these joint actions and they go yeah but
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for this joint make up some words, you're going to have
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to deal with it. Alright so this is my ankle, all right i got my tibia, my fibula,
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talus, my calcaneus. You guys heard of these bones? A little bit. Alright so
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your heel bones, your calcaneus, your talus is kind of in between your shin
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bone and your calcaneus shoved in there. Everybody's cool with that? Everybody
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move around their ankle a little bit. Do you have sagittal plane motion of the
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ankle? Yeah we set a calf raise with sagittal plane motion. Right the problem
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with the ankle is is they don't call that, you don't, you would expect sagittal
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plane motion at the ankle to be what and what? What two joint actions? Flexion and
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extension. Unfortunately somebody decided to get clever and name both of them
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flexion. What the... I didn't come up with this. What you do have is dorsiflexion
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and plantar flexion. You guys heard those terms? Dorsi kind of sounds like what? This is
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our first clue, dorsal fin all right. What's the dorsal fin of my foot? Top surface.
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So dorsiflexion is probably going to be what? Yeah the top surface of my foot
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coming closer to my shin. A plantar, does anybody know what plantar refers to?
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Bottom right, to the plantar surface of my foot is the bottom. So plantarflexion
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is going to be in which direction? Yeah I think about planting myself into the
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ground. Does that help? Plantarflexion is like trying to plant yourself into the
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ground. So what exercise would be plantarflexion? Calf raises which was on our
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sagittal plane chart, which I erased, I'm sorry. Dorsiflexion let me see.
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Dorsiflexion guys, do we use dorsiflexion? Yeah really important job actually. If
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you don't dorsiflex, you don't pick up your feet. What do you do? You shuffle
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right. You ever seen like lazy walkers and they like don't dorsiflex right.
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We need dorsiflexion so that we can clear our foot,
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and then we go through plantarflexion for a push off. Now do we just move in
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the sagittal plane with our ankle, no we also have a little bit of, mmm i'm going
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to call it frontal plane for now. Alright we have a little bit of this, you
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guys with me. Now what those joint actions are called are inversion and
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eversion. Now inversion is the soles of your foot facing inward, all right so
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everybody get into inversion. If you get into inversion what's on the floor kind
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of the outside of your foot right, alright like your pinky toe and your fifth
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metatarsal at the outside of your foot. If I evert now what's on the floor yeah
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the inside of my foot, my big toe, my arch collapses right, if I try to evert. How
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do most ankle sprains happen? Inversion, most people roll their foot outward. How
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do most people walk around though. With too much what eversion. How many of you
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guys see with people like walking around really flattened out, and a little turned
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out? Yeah a lot of eversion out there. Alright so everybody's got inversion,
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eversion. Now pronation and supination we're going to stay away from right now
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for our analysis today. I know you guys have heard those terms. They're not as
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simple as people make them out to be. There a little confused. I would not
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suggest going to your local Foot Locker and getting an analysis on whether
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you're a pronator or supinator. It's not a good idea right, those people have less
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education than you guys do in anatomy, and they're trying to tell you what's
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wrong with your feet. Alright if you really think you got something wrong
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go see a podiatrist, or physical therapist, somebody with a little bit
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more training. Alright pronation is eversion, abduction, and external rotation
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together. Supination is inversion, adduction and
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internal rotation together. When you guys get into more of your advanced
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kinesiology classes you'll talk about why that happens. For now you guys got
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two planes to worry about, sagittal plane what joint actions do I have ? Plantar
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flexion and dorsiflexion. Everybody dorsIflex for me, everybody plantar
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flex for me. What exercise includes plantarflexion? Calf raise, all right.
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Eversion and inversion happens in what plane? Frontal plane. Most people sprain
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their ankle doing inversion, and most people walk around with a little too
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much eversion, beautiful.