Sorry to hear about your husband's symptoms. It sounds like he may have what's called a sensory peripheral neuropathy which affects the feeling his legs and their sense of position in space. This can be caused by a large number of things such as vitamin B12 deficiency and exposure to chemicals such as glue. However, an EMG should have been able to detect something if they did nerve conduction studies. It doesn't sound like the typical presentation of Lyme's disease which is in many cases accompanied by a specific rash, joint pain, fever, and lab abnormalities, although there is a neuropathy associated with LYme disease similar to what I've described above. The tight knee pads may also contribute to his symptoms, causing decreased blood supply. This can be tested by your primary doc with special pressure measurements of his legs. Certainly stress can play a role in this, too. If you do feel that he is getting worse, consider a second opinion and another EMG which perhaps might pick up something that wasn't there before.Good luck.
Adrienne
I am however very positive, I read lots to distract my attention and do not enter any stressful situation as it causes my heart to race and body pain. I am waiting to see a Neurologist, but have been told several time because I am not a Life or Death situation I am not an emergency, which is frustrating. I now have very good doctors and hopefully will find out what is actually wrong soon. Until then I keep smiling!