Hello, What is the general cause of a sensation of ice water flowing in the leg bone. Generally, either leg bone but not both at the same time. My husband may have necrosis in his hip (one has already been replaced), a cyst on his outside of his right knee (probably a future knee replacement) and arthritis in his spine. He is only 50 years old. Just wondering if the ice water sensation is related to one of these conditions or could it be something else? Thank you.