Fig 2.

Arthroscopic drive-through sign. A left knee, placed in a figure-of-4 position, is viewed from the anterolateral portal with a 30° arthroscope and instrumentation from the standard anteromedial portal. The portion beyond the elbow of the hook probe (star) is 4 mm in length and can be seen to be easily driven into the lateral compartment as it opens up owing to the injured structures of the posterolateral corner. (LFC, lateral femoral condyle; LM, lateral meniscus; LTC, lateral tibial condyle.)