@billchitwood Welcome to Mayo Clinic Connect. while we are not medical doctors,and cannot diagnose issues, we are fellow patients or family members/caregivers who share our journeys.

It must be very concerning for you to see your husband's decline in moving around, and possibly falling. For me, that is my biggest fear, falling and not being able to get up [and now I keep recalling that old commercial!] There may be several reasons for near-falling, including an ear infection, sinus problems, uneven surfaces, shoes catching on something as he moves. I now use a cane in the house, and walking stick outside.

Being in stage 3b, I hope your husband is being closely monitored in his condition, not only because of being 3b, which can change rapidly, but also as he ages, how things can change. What was the response by the dr on the non reaction to a knee-jerk reflex? Ask you husband's nephrologist if the almost-falling and other symptoms should be followed up.

Here is an article about peripheral neuropathy from Mayo Clinic that you might find helpful https://www.mayoclinic.org/diseases-conditions/peripheral-neuropathy/symptoms-causes/syc-20352061