For Over 12 Years My Doctor Has Informed Me That

For over 12 years my doctor has informed me that I am a border line diabetic. That I should continue with exercise and keep a proper diet.
During the last two years I have suffered from a light numbness of my feet. On April, 2018, I fell (attic to cement floor, about 9 ft. fall). I fell smack on my butt, I was taken to the ER, after having multiple body scans, my wife was informed that I was the miracle man of the year, with no fractures, no broken bones, and no internal bleeding. Amen and alleluia. Thereafter, I do suffer of numbness of right and left of the Glutenous maximus areas. Question: Is it possible that I may be suffering from nerve damage in this area and this may be the reason for the numbness in my feet. I have suffered from (both) knees pain do to arthritics condition; but no other pains below my hips to feet.