This tag is associated with 4 posts

Causes of Avascular Necrosis (AVN) Mnemonic

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. 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 ·       … Continue reading

Subtrochanteric Femur Fracture

History: middle aged male with trauma.  This is a subtrochanteric fracture of the femur. The above image is a 3D reconstruction from the raw data of a CT of the abdomen and pelvis, such that the patient did not have to undergo additional scanning and radiation exposure to get this image of the femur. See … Continue reading

Bone Infarcts

History: 55 year old male with knee pain.  This is a classic example of bone infarcts, here called osteonecrosis of the knee, which on radiographs is represented as a well defined sclerotic lesion with serpentine margins. In our example, the articular surfaces are mildly distorted, more so on the tibial plateau, causing collapse. On MRI, … Continue reading

Pediatric Femur Anatomy

The following images are from WikiRadiography (WetPaint) here. See a pediatric femur fracture here.