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Lateral ankle sprains- orthoses

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  #1  
Old 10th March 2011, 05:54 AM
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WelshPod WelshPod is offline
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Smile Lateral ankle sprains- orthoses

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Hi everyone!
I am a second year pod student at UWIC and have a research design to write. I am looking to write mine on the success of the use of orthoses for recurrent lateral ankle sprains. I plan to do a randomised control trial so am looking for a placebo insole to use as a control and an orthotic to control the extra movement to pronate the foot more. I have some ideas but would appreciate some other views!

Thanks!!
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Old 10th March 2011, 06:01 AM
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Ian G Ian G is offline
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Default Re: Lateral ankle sprains- orthoses

Randomised controlled trial for an undergraduate dissertation?? You won't have the time to do this surely?

There is no such thing as a placebo insole/orthosis.
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Old 10th March 2011, 06:04 AM
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Default Re: Lateral ankle sprains- orthoses

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Originally Posted by WelshPod View Post
Hi everyone!
I am a second year pod student at UWIC and have a research design to write. I am looking to write mine on the success of the use of orthoses for recurrent lateral ankle sprains. I plan to do a randomised control trial so am looking for a placebo insole to use as a control and an orthotic to control the extra movement to pronate the foot more. I have some ideas but would appreciate some other views!

Thanks!!
to the Arena !!!

Ians point about Placebo orthotics is a very important one. We discussed it a little while ago Ill try and find the thread for you.
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Old 10th March 2011, 06:05 AM
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Default Re: Lateral ankle sprains- orthoses

It is not a dissertation it is another essay and i was looking for something to use that one group of patients can be offered to use as a control. It does not necassarily need to do anything in particular, just so patients are unable to differentiate as to which group they are in. Thanks
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Old 10th March 2011, 06:10 AM
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Default Re: Lateral ankle sprains- orthoses

m weber
Thank you for the notice about the thread on placebo orthoses. i have found it and reading it now!
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Old 10th March 2011, 06:17 AM
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Default Re: Lateral ankle sprains- orthoses

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to the Arena !!!

Ians point about Placebo orthotics is a very important one. We discussed it a little while agoI try and find the thread for you.
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m weber
Thank you for the notice about the thread on placebo orthoses. i have found it and reading it now!
For those reading here the thread Foot Orthoses -placebo
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Old 10th March 2011, 09:45 AM
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Default Re: Lateral ankle sprains- orthoses

You could assess design variables instead of placebo. For example you could give one set of patients a forefoot valgus intrinsic post and another no intrinsic post. You would have to ignore forefoot to rearfoot relationship to do this and cast everyone so that they all have a perpendicular forefoot to rearfoot relationship. My sense is some labs ignore the heel bisection anyway. (No evidence just a feeling.)

There is more than one cause of lateral ankle instability. Delayed peroneal reaction time can also cause instability. A laterally positioned STJ axis can be another cause of ankle instability. Folks with sinus tarsi syndrome get delayed peroneal reaction times. Sinus tarsi syndrome is often caused by the foot being maximally pronated with a high pronation moment from the ground.

You shouldn't give intrinsic forefoot valgus posts to people who cannot evert their lateral column off of the ground because they have no range of motion in that direction. Let me know if you want to explain that more.

Eric
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