Lateral sulcus sign

Case contributed by Craig Hacking

Presentation

1 month post twisting knee injury

Patient Data

Age: 35 years
Gender: Male
x-ray

Small joint effusion. Alignment is normal. The lateral projection demonstrates a deep sulcus terminalis of the lateral femoral condyle (deep lateral femoral notch sign).

Case Discussion

The patient went on to have a MRI which showed an ACL rupture.

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