Clinical tests in posterior cruciate ligament (PCL)/posterolateral corner (PLC) instability
| PLC | PLC + PCL | PCL | |
|---|---|---|---|
| N, Negative; P, positive; SP, strongly positive. | |||
| Posterior sag at 90° | N | SP | SP |
| Posterior drawer at 90° | N | SP | SP |
| Quadriceps active test | N | SP | SP |
| Passive external rotation at 30° | P | SP | N |
| Passive external rotation at 90° | P | SP | SP |