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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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nameless23 nameless23
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6 years ago
What is the causative mechanism and the structure(s) involved in avascular necrosis of the radial head?
 
  What will be an ideal response?
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#1
6 years ago
ANS:
Avascular necrosis of the radial head is the result of a series of steps: (1) repeated valgus stress to the elbow joint; (2) stretching of the medial collateral ligament; (3) excessive compression of the radial head against the capitulum, resulting in cartilage deterioration; and (4) compression and reduction of the vascular supply of the head of the radius, resulting in bone death.
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