My friend Amy Dougherty is a physical therapist in North Carolina and operates Outer Banks Physical Therapy. She is a graduate of the University of North Carolina at Chapel Hill (where I also attended college and law school). She is an outstanding physical therapist and is beloved by her patients on the Outer Banks. Amy answers many of your questions about hip replacement surgery, metal-on-metal artificial hips, and the problems that have arisen from these hip products.
Clay: I want to focus on hip replacement surgery and I know you work with patients who are dealing with that kind of surgery every week. So let me start by asking what are a few reasons a person might need a hip replacement surgery?
Amy: You know, the most common reason is arthritic changes in the hip. So basically arthritis, that is the most common reason. Other reasons can include things like trauma. Some people have congenital mal-alignments where, it is basically called dysplasia where through the process of their development in utero and then following their bony surfaces of the femur, that is the long thigh bone and the acetabulum which is in the pelvis. They do not form correctly, so they might have ill-formed femoral heads. They might have ill-formed or ill-shaped acetabulum. So, the ball and the socket are not really designed well to weight bear. So, a lot of folks that, especially in a young population, that have early onset hip replacements. It is more likely the result of some type of congenital dysplasia. It could be a trauma. So, but arthritic changes is the number one reason and I have total hip replacement patients in my clinic every day. Very popular surgery, yes.