Description
Revision surgery after anterior cruciate ligament (ACL) reconstruction has been reported to have a persistent rate between 3-10% of primary reconstructions. In register studies, revision surgery is often used as a primary endpoint and can be considered a proxy for failure. Little is known about how patient or surgical factors are related to the reported causes of revision.
The primary aim of this study was to describe why and when patients were revised using data from the Norwegian Knee Ligament Register (NKLR). Secondly, we analyzed whether any of a series of patient or surgical factors increases the risk of a particular cause of revision or a combination of these.
New trauma was the most frequently reported cause of revision surgery in Norway. 36% of revisions were done within two years. Revision rates at 10 years was 6,5%. Adjusted HR showed increased risk of revision for younger age groups, and hamstrings tendon graft. Males were more often classified with new trauma as cause of revision.
