PMC4897423_01
51-year-old woman with Hoffa fracture of the medial femoral condyle. Even in retrospect, faint, coronally-oriented linear lucency extending through the medial femoral condyle is difficult to appreciate. Cortical disruption at the medial femoral condylar cortex [arrow in (A)], as well as at the junction of the posterior femoral shaft and condyle [arrow in (B)], is very subtle. A joint effusion is present (B).
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Subtle cortical disruption and faint, linear lucency extending through the posterior aspect of the medial femoral condyle was difficult to confirm, even in retrospect (Fig.1).
51-year-old woman with Hoffa fracture of the medial femoral condyle. Coronal proton density (A), sagittal proton density (B), and sagittal proton density fat-suppressed (C) MR images of the knee more clearly demonstrate the coronal fracture of the medial femoral condyle [arrows in (A), (B), and (C)] with surrounding marrow edema.
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The fracture plane demonstrated an oblique coronal orientation (Fig.2).