Avascular necrosis (AVN) is death and eventual architectural collapse of bone as a result of ischemic injury or damage to bone or bone marrow elements. AVN most commonly affects the ...
Can be asymptomatic in early disease
Pain is the most common symptom. Groin and buttock pain are associated with AVN of femoral head.
Pain with weight-bearing or join...
Native joint preservation should always be attempted first. Initial treatment includes protected weight-bearing to reduce joint pressure and pain.
Patients who have continued ...
http://nonf.org/ http://nonf.org/ ??[View Abstract on OvidMedline]
Moya-Angeler J, Gianakos AL, Villa JC, et al. Current concepts on osteonecrosis of the femoral head. World J Orthop...
M87.9 Osteonecrosis, unspecified
M87.059 Idiopathic aseptic necrosis of unspecified femur
M87.219 Osteonecrosis due to previous trauma, unspecified shoulder
M87.256 Osteonecrosis due to previo...
AVN is higher on the differential for hip and other joint pain in 30- to 50-year-old men > women.
Risk factors for AVN include chronic corticosteroid use, alcoholism, radiation, and ...
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<bold>FIG. 6.44.</bold> Magnetic resonance imaging appearance of avascular necrosis. A: Transverse T<sub>1</sub>-weighted image of a patient (supine) with hip pain on long-term steroid therapy for lupus erythematosus shows nonspecific marrow edema (<italic>arrow</bold>) in the left femoral head (<italic>f</bold>). The location and clinical context of this finding are suggestive of avascular necrosis, but the imaging appearance is otherwise nonspecific. <italic>a</bold>, acetabulum; <italic>b</bold>, bladder. Sagittal T<sub>1</s...
<bold>FIG. 6.44.</bold> Magnetic resonance imaging appearance of avascular necrosis. A: Transverse T<sub>1</sub>-we...