Fig. 3

A MR coronal view of the space above the fibular head. The blue pin indicates the superior border of the articular surface of the fibular head (P); the white pin indicates the medial margin of the fibular insertions of the fibular collateral ligament (E); the green pin indicates the lateral margin of the lateral tibial plateau (O); and the red pin indicates the medial margin of the fibular collateral ligament (D). Green pentagram, caput fibulae; Red pentagram, the lateral tibial plateau; White pentagram, lateral condyle femur; Blue arrow, the fibular collateral ligament