About lunge test for ankle equinus?

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Hello.

I am Podiatry student who really want to know about lunge test for 'Ankle Equinus'. Can I ask my quesions to this forum?

There are two tests for ankle equinus; non-weight bearing Silfverskiold test and weight-bearing lunge test.

With Silfverskiold test, we may differentiate/isolate the structures;

(1) if improved ankle joint dorsiflexion with knee flexed, gastrocnemius equinus,
(2) if equivalant ankle joint dorsiflexion with knee flexion/extension, achilles equinus

My quesion is this. Likewise Silfverskiold test, the same principle/hypothesis apply to lunge test?

Thus, may gastrocnemius/soleus tightness and/or bony block/impingement limit the ankle dorsiflexion at weight-bearing lunge with knee flexion & extension?

If yes, how can we differentiate/isolate the structures at lunge test? Is the same as Silfverskiold test?

I did some research, but I couldn't find the answer to my questions, thus I asked them to the experienced professionals in this forum.

Thanks

Regards;

 

See:
http://www.podiatry-arena.com/podiatry-forum/tags/index.php?tag=/lunge-test/