Why does avascular necrosis occur

CT scans are more detailed than general X-rays. Magnetic resonance imaging MRI. This test uses large magnets, radiofrequencies, and a computer to make detailed images of organs and structures within the body. Radionuclide bone scan. This nuclear imaging technique uses a very small amount of radioactive material, which is injected into the blood to be detected by a scanner. This test shows blood flow to the bone and cell activity within the bone. A procedure in which tissue samples are removed with a needle or during surgery from the body for exam under a microscope.

Functional evaluation of bone. Tests that usually involve surgery to measure the pressure inside the bone. Specific treatment for avascular necrosis will be determined by your healthcare provider based on:. The goal of treatment is to improve functionality and stop further damage to the bone or joint.

Treatments are needed to keep joints from breaking down, and may include:. Core decompression. Advertising revenue supports our not-for-profit mission.

This content does not have an English version. This content does not have an Arabic version. Overview Avascular necrosis is the death of bone tissue due to a lack of blood supply. Request an Appointment at Mayo Clinic. Share on: Facebook Twitter. Show references Jones LC, et al. Osteonecrosis avascular necrosis of bone. Accessed Feb. As bone damage worsens, you may have the following symptoms:. Your health care provider will do a physical exam to find out if you have any diseases or conditions that may affect your bones.

You will be asked about your symptoms and medical history. Be sure to let your provider know about any medicines or vitamin supplements you are taking, even over-the-counter medicine. If your provider knows the cause of osteonecrosis, part of the treatment will be aimed at the underlying condition. For example, if a blood clotting disorder is the cause, treatment will consist, in part, of clot-dissolving medicine. If the condition is caught early, you will take pain relievers and limit use of the affected area.

This may include using crutches if your hip, knee, or ankle is affected. You may need to do range-of-motion exercises. Nonsurgical treatment can often slow the progression of osteonecrosis, but most people will need surgery. Advanced osteonecrosis can lead to osteoarthritis and permanent decreased mobility.

Severe cases may require joint replacement. Also know what the side effects are. Ask if your condition can be treated in other ways. Know why a test or procedure is recommended and what the results could mean. Know what to expect if you do not take the medicine or have the test or procedure. If you have a follow-up appointment, write down the date, time, and purpose for that visit. Know how you can contact your provider if you have questions. All rights reserved.

This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions. Not what you're looking for? Want More Information? Cedars-Sinai has a range of comprehensive treatment options. See Our Orthopaedic Programs. Choose a doctor and schedule an appointment. Find a Doctor. Need Help? Available 24 Hours A Day. Schedule a Callback. Adult Primary Care. Pediatric Primary Care.

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