Hello, my mothers age is 72 she had high pressure problem, she always feel pain in left leg, she has old bone problem for long time, what to do?

Let her see her DR: Possibilities would include problems with circulation, nerves, muscles and bones. She needs to see her primary dr to have a thorough physical exam and be tested for diabetes, cholesterol, etc peripheral arterial/vascular disease are possibilities and can be confirmed by doing sonogram of her arteries and veins in the legs. God bless and take care.