I've been trying to link peroneal stretch reflex or latency and the effect of a pronated foot on it.
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To clarify further I was dicussing the benefits of anti-pronatory foot orthoses in patients with ankle instability with an orthopaedic surgeon and he asked if I had any knowledge of evidence for this. Since then I have read these threads on the forum:
http://www.podiatry-arena.com/podiatry-forum/showthread.php?t=60229
http://www.podiatry-arena.com/podiatry-forum/showthread.php?t=41761
http://www.podiatry-arena.com/podiatry-forum/showthread.php?t=22890
http://www.podiatry-arena.com/podiatry-forum/showthread.php?t=28522
(sorry, but I don't know how to insert more direct links into the forum and advice would be helpful)
I think I am tending to agree with Jeff from the final thread page 2 (28522) where the instability is not caused by deficient peroneal tendons due to weakness or tendinitis, laterally located STJ axis. Rather, that the everted rearfoot position causes slackness and lag in the peroneus longus when called upon to protect against lateral ankle sprain.
I also agree with Luke's opinion from thread 60229. "the most obvious reason for increased peronal activity with orthoses use, would be due to the increased ankle/rearfoot inversion moment". But do we know if fitting orthoses with increased ankle/rearfoot inversion moment is beneficial and why?
Is anyone aware of published articles related to the effects of foot orthoses on improving the peroneal strecth reflex and the potential benefits as a treatment for ankle instability?
Also any ideas or further thoughts on the mechanism of repeated ankle inversion instability in a foot without a laterally deviated STJ axis.
Thanks :dizzy:
Neville
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