bayhorse, bursitis and tendinitis are usually diagnosed through the lost art of the physical exam. Neither is evidenced by x ray. Ultrasound can detect bursitis A medical practitioner may surmise either by location. It is somewhat of a throw away diagnosis. The question is what is causing inflammation in the bursa or the tendon.
My hip sometimes becomes less centered in the joint, When that happens experience pain the the area you describe. When I see chiropractors I usually have to ask that they check the hip. You could ask for a hip x-ray. If you, specify the hip socket. You might see a chiropractor their physical exams are the best.