repaired include the biceps femoris and mid-third lateral capsular ligament. The vast majority of these patients will require reconstruction of the torn structures using an autograft or allograft to restore stability and function of the damaged structures. Anatomic (grafts placed in the exact attachment sites) allograft reconstruction of the FCL and/or popliteus tendon and popliteofibular ligament complex restore the static stabilizers of the posterolateral knee, which allows for early postoperative range of motion. An all arthroscopic "Popliteus Sling" reconstruction using the "Popliteus Portal" is a minimally invasive method to treat the posterolateral rotatory instability due to chronic PLC laxity Chronic combined posterolateral corner injuries Similar to chronic isolated injuries, patients with chronic combined posterolateral knee injuries showing varus alignment will first require an opening wedge osteotomy as part of a staged procedure. With chronic combined PLC injuries the surgeon should treat the injury as if it was isolated with an anatomic reconstruction concurrent with a standard reconstruction of the accompanying ACL and/or PCL injuries. The key point here is that the multiligament reconstructions be done at the same time and not as a staged procedure. This will allow for early range of motion (ROM) exercises to begin and prevent the formation of arthrofibrosis in the joint. All arthroscopic "popliteus Sling reconstruction" procedure with "Popliteus Portal' is a minimally invasive method of reconstruction in these conditions. In addition, failing to address a chronic posterolateral knee injury when repairing a deficient ACL or PCL has been shown to cause increased forces of the graft leading to cruciate reconstruction graft stretching and/or failure. Rehabilitation Rehabilitation protocols for post-op patients with repaired or reconstructed posterolateral corner injuries focus on strengthening and achieving full range of motion. Similar to nonoperative treatments, the patient is non-weightbearing for 6 weeks followed by a return to partial weight-bearing on crutches. Range of motion exercises begin first at 1 to 2 days postoperatively, followed by progressive strength training. Patients can typically begin riding a stationary bike and using a quadriceps machine around 6 to 8 weeks, but isolated hamstring exercises should be avoided for a minimum of 4 months postoperatively. Patients can progress to leg presses after 6 weeks, but the weight should be very light. Jogging and more aggressive strength training can begin around 4 – 6 months at the surgeon and physical therapists discretion. Patients should not be casted after surgery unless absolutely necessary. Surgical outcomes A