His age is 75 and he is facing knee problem he feels leg is heavier than normal and weight is around 75-80 kg and sugar problem also in such situations surgery can it possible because he can not walk on his leg now please suggest.

Suggestions offered by doctors on Lybrate are of advisory nature i.e., for educational and informational purposes only. Content posted on, created for, or compiled by Lybrate is not intended or designed to replace your doctor's independent judgment about any symptom, condition, or the appropriateness or risks of a procedure or treatment for a given person.