Interestingly, unlike other forms of hip osteoarthritis or other things we've discussed regarding the hip, avascular necrosis is much more prevalent in men, aside from the very specific cause of AVN caused by lupus, which is more common in women. Specifically, the male to female ratio is approximately eight to one female. Patients associated with avascular necrosis tend to be on a younger age spectrum than patients who have just normal wear and tear arthritis of their hip, affecting patients between the ages of 20 and 50. And therefore, most of my younger patients requiring hip replacement surgery have a diagnosis of avascular necrosis or other hip morphologies, such as hip dysplasia.
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