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Attached are clips to demonstrate the movements I refer to in my posts. Feel free to ask questions.
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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.Last edited by EricMatuszewski; 11-16-2006, 10:08 AM. Reason: adding explanation of Eversion and Inversion -
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
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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 ClarityComment
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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...
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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.
EricComment
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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
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pronotion.mov
What do you need to see pronotion.mov
I have clicked and does NOT work for me
juliantennis@comcast.netComment
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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
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Loading
Please provide step by step explanation like click this and thisOriginally posted by EricMatuszewskiComment
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Download
I cannot down load the rest eitherOriginally posted by EricMatuszewskiComment
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Wrist movement
If you watch DIFFERENT/OTHER VIDEOS from archivesOriginally posted by EricMatuszewski
the wrist forms the INVERTED LETTER V so it is MUCH MORE THAN 15 degreesComment
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download
The obvious way to fix a problem would to put these filesOriginally posted by EricMatuszewski
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.movComment
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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.
EricComment
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