Strains from the muscles across the hip and pelvis could potentially cause pain and spasm. The commonest strains are groin pulls and hamstring strains. In this method, the tip of the thigh bone (femur) is capped using a steel masking — a solid cobalt chromium metal — much like the https://www.theorthopaedicandpainpractice.com/what-is-avascular-necrosis-of-the-hip/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB