Over the past 30 years, knee ligament reconstruction has evolved as much as any other within the field of ortho- paedic surgery. While, primary ACL reconstruction is now a common procedure, with approximately 100,000 per- formed per year in the United States, this symposium is intended to examine knee ligament surgery beyond primary ACL reconstruction. Complex knee ligament surgery is varied and challenging, ranging from new multifaceted techniques for ACL reconstruction to complicated multi- ligament surgery involving reconstruction of all four ligaments (and ligament complexes). Stabilization with external fixation and nerve reconstruction may be required to deal with the sequelae of complex knee ligament inju- ries. This symposium addresses all of these areas.