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Fig. 4B Medial meniscal flounce on routine knee MR images of
34-year-old man with medial collateral ligament tear. Sagittal proton
density-weighted (TR/TE, 3,300/16) images in neutral (A), maximally
extended (B), and maximally flexed (C) knee in a surface coil.
From neutral to maximally extended position, flounce disappears. On maximally
flexed knee, flounce is accentuated, with posterior migration of anterior horn
and slightly anterior migration of posterior horn.