What can I do to prevent or lessen the chance of avascular necrosis?
The answer to your question is difficult because there are no studies to help. I can give you some suggestions based on my experience. Exercise is good but it must be low impact for the hips and shoulders. Things that require jumping are not good and jogging is especially bad. Sitting and doing leg lifting type exercises are good as are exercises to keep the shoulders strong. Weights, if used, should be light. A multivitamin with vitamin D and calcium is a good idea. Extra calcium may be good but this should be medically supervised because too much vitamin D and Calcium can cause the calcium to become dangerously high.
