Abstract

Clinical outcomes of reconstructive surgery for injuries to the posterior cruciate ligament (PCL) of the knee have been unsatisfactory, with persistent instability predisposing patients to early degenerative joint disease [Clancy, 1983]. One explanation for these outcomes has been the high incidence (up to 60%) of associated injuries to the posterolateral structures (PLS), which include the lateral collateral ligament (LCL) and popliteus complex. Combined PCL/PLS injuries are particularly debilitating because restraints to both posterior tibial translation and external rotation are lost [Grood, 1988]. Further, PLS injuries are difficult to reconstruct due to its complex anatomy; thus, often only the PCL is reconstructed when combined injuries occur.

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