Standard treatment usually doesn't involve surgery, but it depends on the PCL tear. If it's a new tear without damage to bones or other ligaments, surgery may not be needed.
Most patients wear a splint and use crutches for a short period of time. Then they start physical therapy. It's very important to restore thigh strength and range of movement. Patients who do these kinds of exercises can usually return to sports and other activities without limitations.
If the PCL tear is chronic or severe, surgery may be necessary. Doctors are developing new techniques to give patients better knee function after PCL surgery.