Bursitis: Inflammation in the bursae can cause hip pain. The bursae are fluid-filled sacs cushioning the hip joint. Trochanteric bursitis affects the bursa on the surface from the hip, whilst iliopsoas bursitis has an effect on the bursa on the inside. Hip osteonecrosis, often known as avascular necrosis or aseptic https://www.theorthopaedicandpainpractice.com/what-is-avascular-necrosis-of-the-hip/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB