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Anterior cruciate ligament (ACL) is one of the important ligaments that stabilise your knee (see figure 1). If you have torn (ruptured) this ligament, the knee can collapse or ‘give way’ when making twisting or turning movements.
An ACL rupture happens as a result of a twisting injury to your knee. The common causes are contact sports and skiing injuries. You can injure other parts of your knee at the same time such as tearing a cartilage or damaging the joint surface.
Your knee should not give way any more. This will allow you to be more active and you may be able to return to some of or all your sporting activities.
The physiotherapist can give you exercises to strengthen and improve the co-ordination of the muscles in your thigh.
Wearing a knee brace can sometimes help while you are playing sports.
Various anaesthetic techniques are possible. The operation usually takes an hour to 90 minutes.
Your surgeon will make one or more cuts around your knee. Most surgeons perform the operation by an arthroscopy (keyhole surgery), using a camera to see inside your knee.
Your surgeon will replace the ACL with a piece of suitable tissue from another area of your body. The ends of the replacement ligament are fixed with special screws or anchors into holes drilled in the bone.
You should be able to go home the same day or the day after.
Your surgeon may want you to wear a knee brace for a few weeks. Once your knee is settling down you will need to start intensive physiotherapy treatment, which may continue for as long as six months.
Regular exercise should help you to return to normal activities as soon as possible. Before you start exercising, ask the healthcare team or your GP for advice.
It is unlikely that your knee will ever be as good as it was before the original injury.
If your knee continually gives way after an ACL rupture, reconstruction offers the chance of improving the stability of your knee in everyday life and in sporting activities. You may be able to return to a level of sport that otherwise would not be possible.
Author: Mr Stephen Milner DM FRCS (Tr. & Orth.)
Illustrations: Medical Illustration Copyright © Medical-Artist.com
This page is intended for information purposes only and should not replace advice that your relevant health professional would give you.
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