Computer navigation with posterior mis total hip arthroplasty

Abstract

The majority of literature on computer-assisted surgery of the hip shows how navigation assists the surgeon in more accurate component placement as compared with techniques that use mechanical guides or are freehand [1-5]. Our work has been with imageless navigation technology, which allows real-time intraoperative knowledge of the quantitative direction and depth of reaming; adjustment during reaming for variations in the bony anatomy to allow for correct cup coverage with optimal inclination; and adjustment of the anteversion of a cup to a desired combined anteversion through knowledge of the fixed femoral anteversion [6].