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Online ISSN 1827-1707
Koh J. L., Koo S. S.
Department of Orthopedic Surgery Northwestern University Feinberg School of Medicine Chicago, IL, USA
The growing number of people participating in sports activities has escalated the number of anterior cruciate ligament (ACL) reconstructions being performed over recent years. Despite the common occurrence of this injury, and the frequency with which it is reconstructed, poor clinical results are not uncommon. Most of this is attributed to technical error, namely tunnel placement. As a result, the number of revisions are quite high, with the American Orthopedic Society for Sports Medicine estimating a revision rate of 10-20% using traditional endoscopic techniques. Computer assisted orthopedic surgery (CAS) is a relatively recent development to combat and improve on the shortcomings of our current orthopedic techniques. In ACL reconstruction, the goal of CAS is to eliminate inconsistent placement of graft tunnels by improving the precision and reproducibility of these procedures. CAS can also provide valuable information on rotational and translational laxity of the knee in vivo, pre and postoperatively. There are also studies to support its use in difficult cases, such as double bundle reconstructions. Although more research is needed, initial experiences with navigated systems are encouraging.