What is it?
ACL stands for anterior cruciate ligament. “It’s the big ligament that provides rotational stability to your knee,” says Dr Masci. A tear can mean less stability and feel like the knee is giving way.
How does it happen?
It’s usually caused by a sudden twisting, turning or pivoting movement – so sports like skiing, squash, football, netball and rugby can increase your chances. “This is a major injury and often causes a lot of pain and swelling – people usually know they’ve done something right away.”
What helps?
“If you’re in the military, work at height, or an athlete and need full movement and stability of the knee, surgery might be the only option,” says Dr Masci. This usually involves reconstructing the ACL using tissue from ligaments from another part of the body.
“It’s a big operation and the downtime can be long. However, a surprising number of people can live without an ACL and, instead, physio and rehab can help,” says Dr Masci. “There are special knee braces to keep the joint stable if you’d still like to ski or play sport, or you could just take out any contact or pivoting sports.”