Hi, thanks for writing to HCM.Polio
affected muscles are always weak and underdeveloped. They lack the inherent "tone" which normal muscles have.
There is no way to increase the muscle strength in polio affected limbs
(atleast till date). Secondary to the effect of underdeveloped muscles, even the bones are weak and soft in polio affected persons.
The only way to deal with your wife's problem is to use CALIPERS which will provide support and stability to the limb.
Hope this information is helpful. Good day