Repetitive knee stress and lack of rest can be major causes of ACL failure

Repetitive knee stress and failure to accommodate sufficient rest between periods of strenuous exercise may be key factors behind the rapid rise in anterior cruciate ligament (ACL) injuries in world sport, a new international study has found.

While it is already well recognized that a single supramaximal force can cause ACL failure, it has been assumed that sub-maximal forces could not cause ACL failure.

But this world-first research, published in theĀ American Journal of Sports Medicine, has found that a series of submaximal forces can indeed cause damage to accrue in the ACL, in a process called low-cycle material fatigue, and that same damage is found in ACLs which have failed.

Full story at news-medical.net