[Revision surgery in failed anterior cruciate ligament-plasty].

As the number of primary ACL reconstructions increases the frequency of revision ACL surgery will become more common. Revision surgery for the correction of recurrent functional instability requires a careful analysis to identify the potential causes of graft failure through a detailed history, physical examination and radiographic evaluation to ensure the success of the salvage procedure and to avoid repetition of errors. Technical considerations of revision ligament surgery like graft selection, hardware removal and new tunnel placement are presented.