My Mother is 96 years old and is diabetic, has high cholesterol and high blood pressure. She has been living alone all these years until recently. She fell down 5 times this week. She has no strength in her legs. We took her to urgent care where she had a cat scan and 10 different x ray done of her body. She is coherent but is not able to walk. She complains about pain in her arms and under arms, legs and ankles-like a burning feeling. What can it be?