how do you get avascular necrosis
Hi Jackie, From what I understand-, ( and I’m no expert, just a Mom) Its a natural progresson of Perthes. The bones are supposto, shed, and regrow, Thats what makes the bone strong. But with Perhes, this dosent happen. The bone sheds, but dosent regrow, and that is what causes the bone to ‘die’. The bone gets weak, and miss shapened. Hope that helps. Maggie