Fig. 2

A-C: Measurements of HPIE, SLPIE and SAPIE in PCL rupture patient. D-F: Measurements of HPIE, SLPIE and SAPIE in PCL-intact patient. A and D, reference line. B and E, HPIE was measured as the perpendicular length from the apex to the reference line, and SLPIE was measured as the distance from the apex to the lowest tibial attachment of the PCL C and F, SAPIE was measured between the reference line and the tangent of the slope of the posterior intercondylar eminence