My legs are completely numb, I have continued to walk on severe sprains, wounds, glass in feet, etc. anything that causes peripheral neuropathy will cause numbness, in my case it is Charcot Marie Tooth, hereditary neuropathy, but there could be many causes.
I delayed getting a diagnosis for close to 15 years because I was afraid I was a diabetic- that was the only cause of neuropathy I knew of. I have learned that there are many more causes of numbness.
That sounds like a terrible injury. I hope that you recover well. It is so hard not to overdo things when you can't feel normal pain, and so easy to make things much worse.