MRI's role in evaluating knee anatomy and injuries.

Because its function is related to its bony anatomy, ligamentous structures and integrated muscle groups, the knee is one of the most complex joints in the human body. Not surprisingly, knee injuries rank as one of the major causes of physical disability. Prior to the introduction of magnetic resonance imaging, prompt and accurate diagnosis of knee injuries was a challenge. Now, using MRI, a highly accurate diagnosis can be made in 30 minutes or less without patient discomfort. This article reviews knee anatomy, discusses common injuries and describes magnetic resonance techniques for imaging the knee.