Table 3.

Grading of PCL injuries based on the degree of posterior tibial translation as found on posterior drawer exam and kneeling stress radiograph measurement of side to side difference

Grade	Clinical finding with posterior drawer exam	Kneeling stress radiograph measurement SSD
I	0-5 mm PTT	0-7 mm PTT
II	5-10 mm PTT	◊
III	>10 mm PTT; MTP posterior to MFC; posterior sag	◊

PCL – posterior cruciate ligament; SSD – side-to-side difference; PTT – posterior tibial translation; MTP – medial tibial plateau; MFC – medial femoral condyle