Why most knee injuries don't need surgery to heal
Expanding the role of physiotherapists and the value of hard work was given a very public boost thanks to Edmonton Oilers captain Connor McDavid's dramatized non-surgical recovery from a bad knee injury. Tears like the one McDavid suffered to his posterior cruciate ligament (PCL), which prevents the thigh from sliding off the front edge of the shin bone, are fairly uncommon and are, in most cases, managed without surgery.
Source: Medical Xpress
