From history it appears that you might be having osteoartheritis of lower spines producing irritation or pressure on nerves giving rise to this problem.
over the part in past might cause this degenerative changes earlier.
Go for x-ray lumbo-sacral region.
Consult orthopedic surgeon. Physiotherapy
will be much helpful.
Take some B1, B6, B12 injections.
Take calcium, vitamin a
and D supplements.
Ok and take care.