The Use of Computer Navigation and Robotic Technology in Complex Total Hip Arthroplasty.

Computer assisted surgical (CAS) navigation and robotic-assisted total hip arthroplasty (THA) have the potential to improve the reproducibility of accurate component positioning and facilitate complex cases, including revision and preoperative deformity. Numerous studies, including multiple comparing technology with conventional THA control groups, suggest that CAS navigation may improve component accuracy in cases of deformity such as hip dysplasia and significant leg length discrepancy. Revision THA data is also encouraging but limited. The functional benefits compared to conventional techniques remain unclear. The evidence for robot-assisted THA in complex cases is more limited but also demonstrates utility. For complex cases, studies comparing results with conventional THA are not yet available. The limitations of these systems, including cost, operative time, learning curves, and possible complications, require further study. The available data for CAS navigation and robotic-assisted THA indicates that they may play a role in complex deformity and revision cases. Further high-quality randomized studies should be undertaken.