As you have probably read, avascular necrosis is the death of bone tissue. The causes are many. My doctors disagree as to whether the cause is my long untreated Crohn's of from the years of on/off prednisone usage to treat my asthma in the early 80s. I didn't take prednisone for 20 years after that. One day in 2002 I awoke in horrible pain. I couldn't even put weight on my legs because my upper thighs and hips hurt so bad. We had done a long hike the day before and I attributed the pain to overdoing it. This was a Friday morning and I thought laying in bed, taking naproxen would make me good to go by the next day. Saturday was just as bad. Finally could walk without help but still had bad, bad groin pain.
Hip problems are typically felt as pain in the groin. Pain on the side of the hip often is bursitis. Pain that starts at the top of the buttock and goes down thigh might be from the sacroiliac joints. That's where/how I feel my SI joints when they get inflamed.
An MRI is the best way to get to the root of this problem. Avascular necrosis doesn't usually stow on xray until the latter stages of the disease. If you are having a different inflammatory process going on the MRI will pick it up.
MY avascular necrosis [AVN] was found on MRI in 2004. I was having pain in the buttocks. My AVN is not active. I was sent for evaluation for a hip replacement in early 2005. At that time, my GI discovered that I had AS. He put me on Remicade, it cleared up the inflammation, no more pain, and I canceled my hip replacement. I have been walking around for a long time with 30% of the top of each femur DEAD. The doctors are amazed. But they don't hurt. My case is very unusual. Most people that develop AVN have lots of pain and need surgery to deal with AVN.
Try not to worry what the problem until they give you the report from the MRI. Unless you have used lots and lots of prednisone, drank excessive amounts of alcohol, or are a scuba diver, your risk for AVN is probably low.
Moderator Crohn's disease and Irritable Bowel Forums
CD, Ankylosing Spondylitis, small fiber peripheral neuropathy, avascular necrosis, peripheral artery disease, pulmonary hypertension, degenerative disc disease, asthma, severe allergy and a host of other medical problems.