Foot and ankle
Anterior drawer sign
>10 mm
Radiography (Lateral)
It's the distance between the tibia and the talus on a lateral view.
The difference between right and left ankle anterior drawer must be <5 mm.
Some authors advocate that the value for the anterior drawer sign is >5 mm or a right and left ankle anterior drawer difference of >3 mm.
Reference
DiGiovanni CW, M.d. JG. Foot and Ankle, Core Knowledge in Orthopaedics. C.V. Mosby. (2007).
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