Fig. 3From: Evolving etiologies and rates of revision total knee arthroplasty: a 10-year institutional reportTKA Revision Etiology: Primary TKA Time Period. Number of TKA revisions is displayed on the vertical axis and the cause for revision is displayed on the horizontal axis. Black bars indicate primary TKA performed before January 31, 1999. Grey bars indicate primary TKA performed after January 31, 1999Back to article page