Comment on “Tf???”

• TranscendentalEmpire@lemmy.today ⁨2⁩ ⁨weeks⁩ ago

  Aim your toes forward in the normal anatomical position; now rotate your entire foot to the left or right. That’s your fibula working. Without it, very limited rotation; but otherwise you can still walk and function mostly normally, just a bit impaired

  Eh… I do specialize in orthopedics and rehabilitation. You can still do all these things without a fully functional fibula, just to a reduced degree. The fibula only contributes to a few degrees of range of motion in the lower limb, we are talking about millimeters. It can be noticeable given enough time or a high enough level of vigorous activity. Most people would live a fairly active lifestyle without noticing this kind of damage to the fibula.

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  • Murse@slrpnk.net ⁨2⁩ ⁨weeks⁩ ago

    we are talking about millimeters

    No shit? I would have guessed at least like 15 degrees of rotation. I think I took the radius comparison a bit too literal.

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    • TranscendentalEmpire@lemmy.today ⁨2⁩ ⁨weeks⁩ ago

      The radius moves a lot more than the fibula, which makes sense considering the need for moderate rigidity for weight bearing. The fibula only moves around a degree in internal and external rotation and less than a degree in the sagital tilting.

      If you think about the rom in the ankle compared to the wrist it makes a bit more sense.

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      • Murse@slrpnk.net ⁨2⁩ ⁨weeks⁩ ago

        Yeah I wasn’t thinking ankle at all. And even here and now, I’m trying to rotate my own leg while keeping the ankle rigid, and… yea it doesn’t go very far. Never really appreciated just how large a role the ankle plays there.

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  • Zagorath@quokk.au ⁨2⁩ ⁨weeks⁩ ago

    It can be noticeable given enough time or a high enough level of vigorous activity.

    So are we talking this would impact you if you’re an elite athlete, but not an advanced amateur? Or is it more that it’ll impact sports where changing direction quickly matters (like any football or court sport) but not more steady ones (like cycling or running)?

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    • TranscendentalEmpire@lemmy.today ⁨2⁩ ⁨weeks⁩ ago

      You’d probably notice it more if you were doing sports with a lot of lateral movements, pivoting, and changing direction. Not so much with something like cycling. You might notice over time it if you were doing something like marathons as it does help absorb some ground force reaction on heel strike.

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      • Zagorath@quokk.au ⁨2⁩ ⁨weeks⁩ ago

        Fascinating. Thanks for sharing!

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  • drosophila@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

    So you won’t notice it unless you’re a ballerina or something?

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    • TranscendentalEmpire@lemmy.today ⁨2⁩ ⁨weeks⁩ ago

      You’d probably eventually notice just after a long time if you are fairly active, even a loss of rom of a couple degrees adds up over time. You would probably notice a lot faster if you were an athlete, just because the issues would compound faster and you’re more connected to your body.

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