Announcement

Collapse
No announcement yet.

Wrist/Forearm movement clips

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Wrist/Forearm movement clips

    Attached are clips to demonstrate the movements I refer to in my posts. Feel free to ask questions.
    Attached Files

  • #2
    Here are the rest...

    Eversion and Inversion are usually used to describe the movement of the ankle joint, However there seems to be analogous movements possible at the wrist joint so I included them.
    Attached Files
    Last edited by EricMatuszewski; 11-16-2006, 10:08 AM. Reason: adding explanation of Eversion and Inversion

    Comment


    • #3
      Eric,

      Great pictures. Now I know what Radial and Ulnar flexions are.


      Are you sure there are such movements as eversion and inversion of the hand?
      They just seem like (constrained) pronation and supination to me.

      Comment


      • #4
        Inversion and Eversion are used to describe movements of the ankle joint.

        The analogous movements at the wrist joint would happen when the hand was in a hyperextended position (as in the clip).

        It's generally understood that very little motion occurs in this way in the wrist (it's partly axial rotation which is usually more dependent on pronation and supination of the forearm) so the application of ankle movement terms to describe wrist movements is unconventional.

        These wrist movements are very small (less than 15 degrees).

        It seems though that when a weighted lever such as a racket is gripped in the hand and thus exerts a torque on the wrist joint, especially during a torque amplifying movement like a tennis stoke, such Inversion/Eversion like movements are much more likely.

        These movements are also all somewhat dependant on each persons particular wrist genetics and age. Ranges of motion are somewhat individual for each player. Some may Invert/Evert more other less.
        Last edited by EricMatuszewski; 11-17-2006, 05:11 AM. Reason: Correcting language, improving Clarity

        Comment


        • #5
          Can't seem to view the files. With both Quicktime and Windows Media Player I get a comment that elements are missing and then just a blank screen...

          Comment


          • #6
            Downloading issues

            I did a test to see If I could download them on different PC's.

            They download fine on my Mac but not on my Sony, I made the clips on a Mac, but I don't know why that would make a difference.

            Maybe, Maverick can give some suggestions as he seems to understand the intracasies of computer uploading and downloading better than I. Sorry for the frustrating tech problem, the clips are actually very good.

            Eric

            Comment


            • #7
              Hello.

              The clips play with VCL media player on win xp. You have to download first and than play.

              Video lan client media player is free software and plays nearly everything.

              To download the program just google.

              Comment


              • #8
                pronotion.mov

                What do you need to see pronotion.mov
                I have clicked and does NOT work for me
                juliantennis@comcast.net

                Comment


                • #9
                  Sorry Julian,

                  I just checked it and it downloads fine on my end. Let me know if you get it to work this time. So you got the rest to download, but not this one?

                  I'm not really a computer expert, and I use a Mac so my PC skills are few.

                  Comment


                  • #10
                    Loading

                    Originally posted by EricMatuszewski
                    Sorry Julian,

                    I just checked it and it downloads fine on my end. Let me know if you get it to work this time. So you got the rest to download, but not this one?

                    I'm not really a computer expert, and I use a Mac so my PC skills are few.
                    Please provide step by step explanation like click this and this

                    Comment


                    • #11
                      Download

                      Originally posted by EricMatuszewski
                      Sorry Julian,

                      I just checked it and it downloads fine on my end. Let me know if you get it to work this time. So you got the rest to download, but not this one?

                      I'm not really a computer expert, and I use a Mac so my PC skills are few.
                      I cannot down load the rest either

                      Comment


                      • #12
                        Wrist movement

                        Originally posted by EricMatuszewski
                        Inversion and Eversion are used to describe movements of the ankle joint.

                        The analogous movements at the wrist joint would happen when the hand was in a hyperextended position (as in the clip).

                        It's generally understood that very little motion occurs in this way in the wrist (it's partly axial rotation which is usually more dependent on pronation and supination of the forearm) so the application of ankle movement terms to describe wrist movements is unconventional.

                        These wrist movements are very small (less than 15 degrees).

                        It seems though that when a weighted lever such as a racket is gripped in the hand and thus exerts a torque on the wrist joint, especially during a torque amplifying movement like a tennis stoke, such Inversion/Eversion like movements are much more likely.

                        These movements are also all somewhat dependant on each persons particular wrist genetics and age. Ranges of motion are somewhat individual for each player. Some may Invert/Evert more other less.
                        If you watch DIFFERENT/OTHER VIDEOS from archives
                        the wrist forms the INVERTED LETTER V so it is MUCH MORE THAN 15 degrees

                        Comment


                        • #13
                          download

                          Originally posted by EricMatuszewski
                          Attached are clips to demonstrate the movements I refer to in my posts. Feel free to ask questions.
                          The obvious way to fix a problem would to put these files
                          at the different location
                          for example
                          the location given below in a poist by Jon Yandell works:

                          Look at this image of Federer:
                          http://www.tennisplayer.net/members...io nFront1.mov

                          Comment


                          • #14
                            Julian,

                            I think there was some communication breakdown.

                            The less than 15 deg comment was made in regards ONLY to eversion/inversion movements.

                            The other movements of course have much greater ranges of motion. Hope this makes more sense.

                            Eric

                            Comment

                            Who's Online

                            Collapse

                            There are currently 8522 users online. 6 members and 8516 guests.

                            Most users ever online was 139,261 at 09:55 PM on 08-18-2024.

                            Working...
                            X