Abstract
The floppy Anterior Cruciate Ligament (ACL) sign is a well-established arthroscopic and MRI indicator of Posterior Cruciate Ligament (PCL) insufficiency. We explored the diagnostic and therapeutic options in such cases by retrospectively analyzing the management of a series of five consecutive cases of iatrogenic floppy ACL reconstructions which resulted in fixed posterior drawer. All patients were young athletes. Because their ACL rehabilitation program was failing they sought for a new medical expertise. In all cases arthroscopic PCL reconstruction was performed and the acquired injuries after the initial ACL reconstruction were treated. All patients regained full range of motion and stable knees. Confusion between a PCL and an ACL injury still seems to be high. If not addressed accordingly, the fixed posterior drawer may lead to irreversible damage of the knee joint.
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