This condition happens when the fluid-filled cushioning sacs on the outside point of your hip, called trochanteric bursa, get swollen. Your doctor will examine you, and ask about what movements give you pain. The swollen sac won’t show up on X-rays, but you may get out to rule out other conditions. You could get an ultrasound test, and you may get an MRI if your hip isn’t responding to treatment. In some cases, your doctor may inject your bursa with a pain-numbing drug. If the pain goes away at once, you most likely have trochanteric bursitis.