What is Hip Osteonecrosis?
Osteonecrosis of the hip, also known as avascular necrosis, occurs when bone deteriorates due to a lack of blood supply. It can be associated with many conditions, including prior trauma, clotting disorders and treatment of certain medical problems. In advanced stages, the weakened bone can collapse and cause severe pain.
Symptoms of Hip Osteonecrosis
Many patients with hip osteonecrosis experience sudden onset groin pain, stiffness and limping. Other patients may notice a gradual onset of front pocket region discomfort. As the process progresses, a leg length discrepancy can develop and worsen over time.
Diagnosis of Hip Osteonecrosis
Hip osteonecrosis is diagnosed with a combination of physical examination and imaging studies. In advanced stages, X-rays are all that is needed to solidify the diagnosis. In earlier stages, MRI may be necessary.
Treatments for Hip Osteonecrosis
Managing osteonecrosis of the hip typically begins with conservative measures. If the cause is modifiable, lifestyle or medication changes may help combat progression. Other non-invasive modalities, similar to those used for hip arthritis, may be indicated. Hip replacement surgery is considered when conservative measures are insufficient and irreversible bone death has occurred.