The most common mechanism of injury is sport and in 65% of our cases here at SSC, this will not have involved contact.
The typical history is a ‘pivot’ or ‘cut and turn’ move with a sensation of knee instability and buckling. Some individuals report a “pop” or hearing a crack from the joint.
This invariably leads to acute pain and an inability to continue in the activity with the subsequent development of swelling. Not all injuries are typically sustained in sport, with some sustained in high energy trauma or in any uncontrolled rotational movement.
A tear of the anterior cruciate ligament can cause both short and long term issues with interference in normal knee function.