There are numerous causes of avascular necrosis (AVN), which is at its most basic definition when blood flow to a bone is interrupted or reduced.
Avascular necrosis of the femoral head – radiograph of the left hip shows flattening of the femoral head compatible with AVN.
Numerous mnemonics have been proposed to remember the many causes of AVN. My favorite is probably GIVE INFARCTS:
| GIVE INFARCTS |
| · G- Gaucher disease |
| · I- Idiopathic- Legg-Calve Perthes |
| · V- Vasculitis- SLE, polyarteritis nodosa, RA |
| · E- Environmental- Frost bite, thermal injury |
| · I- Irradiation |
| · N- Neoplasia associated coagulopathy |
| · F- Fat corticosteroids |
| · A- Alcoholism |
| · R- Renal failure dialysis |
| · C- Caisson disease |
| · T- Trauma |
| · S- Sickle cell disease |
Others that have been proposed:
ASEPTIC
- A: alcohol
- S: sickle cell disease/ SLE
- E: exogenous steroid
- P: pancreatitis
- T: trauma
- I: infection
- C: caisson disease
STARS
- S: steriods
- T: trauma
- A: alcohol abuse
- R: radiation osteonecrosis
- S: sickle cell disease
PLASTIC RAGS
- P: pancreatitis
- L: lupus
- A: alcohol
- S: steroids
- T: trauma
- I: idiopathic, infection
- C: caisson disease, collagen vascular disease
- R: radiation, rheumatoid arthritis
- A: amyloid
- G: Gaucher disease
- S: sickle cell disease
References:
1. http://www.pedsradiology.com/Historyanswer.aspx?qid=480&fid=1
2. http://rad.usuhs.mil/medpix/radpix.html?mode=single&recnum=786#pic
Learn about bone infarcts.
RADIOLOGYPICS.COM 
Discussion
Trackbacks/Pingbacks
Pingback: http://artroscopiayartroplastia.blogspot « bibliomanazteca - November 15, 2014