If left untreated, the disease progresses, the bone collapses, and the joint surface breaks down, leading to pain and arthritis. Epidemiology
Avascular necrosis usually affects people between 30 and 50 years of age; about 10,000 to 20,000 people develop avascular necrosis of the head of the femur in the US each year. Society and culture
Cases of avascular necrosis have been identified in a few high-profile athletes. It abruptly ended the career of American football running-back Bo Jackson in 1991. Doctors discovered Jackson to have lost all of the cartilage supporting his hip while he was undergoing tests following a hip-injury he had on the field during a 1991 NFL Playoff game. Avascular necrosis of the hip was also identified in a routine medical check-up on quarterback Brett Favre following his trade to the Green Bay Packers in 1991. However, Favre would go on to have a long career at the Packers.Another high-profile athlete was American road racing cyclist Floyd Landis, winner of the 2006 Tour de France, the title being subsequently stripped from his record by cyclings governing bodies after his blood samples tested positive for banned substances. During that tour, Landis was allowed cortisone shots to help manage his ailment, despite cortisone also being a banned substance in professional cycling at the time. Rafael Nadal successfully continued his tennis career after having surgery for Mueller-Weiss syndrome (osteonecrosis of the navicular.)
But with the increase in the use of imaging, especially abdominal computed tomography (CT) scan in the work-up for acute abdomen, more cases of omental infarction are being diagnosed preoperatively. This has also led to the observation that omental infarction is a self-limiting condition which can be managed conservatively. Currently, conservative management and surgery are the only treatment options for omental infarction with no consensus as to the best treatment modality. Having both acute appendicitis and omental infarction is extremely rare with only two cases reported in the literature: one in an adult female and the other in a 7-year-old girl. Diagnosis
The diagnosis is usually inferred from abdominal CT scan which shows a localised inflammatory-appearing mass of omentum . Treatment
Conservative treatment may include antibiotics, anti-inflammatory medication, and pain medication. See also
Greater omentum

References


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