Your ACL connects your thigh bone to your shin bone and helps to keep your knee stable. If you’ve torn or sprained your ACL, ACL reconstruction can replace the damaged ligament with a graft. This is a replacement tendon from another part of your knee. It’s usually done as a keyhole procedure. This means your surgeon will carry out the operation through tiny holes in your skin, rather than needing to make a larger cut. Not everyone with an ACL injury needs surgery. But your doctor may be more likely to recommend surgery if: you play sports that include a lot of twisting and turning – such as football, rugby or netball – and you want to get back to it you have a very physical or manual job – for example, you’re a firefighter or police officer or you work in construction other parts of your knee are damaged and could also be repaired with surgery your knee gives way a lot (known as instability) It’s important to think about the risks and benefits of surgery and to talk this through with your surgeon. They’ll discuss all your treatment options and help you to consider what would work best for you. Your surgeon will also explain exactly what to expect before, during and after the procedure, and any risks involved. Take your time before deciding, and make sure you ask your surgeon if you have any questions. If you decide to go ahead with the procedure, you’ll need to sign a consent form. This is why it’s important to make sure you feel properly informed.