Segmental Acetabular Defects Managed by Augments in Conjunction with CT During Robotic Total Hip Arthroplasty: A Report of 2 Cases.

Cases: We present 2 robotic-assisted hip arthroplasty cases with significant segmental acetabular defects that could compromise cup fixation. We outline an algorithmic planning approach on a computed tomography (CT)-based platform to address these defects by predicting augmentation needs, when component adjustments alone are inadequate, and describe the novel combination of augments in conjunction with robotic-assisted hip arthroplasty.

Conclusion: CT-based robotic-assisted hip arthroplasty is a powerful tool to assess and address acetabular deficiencies. Rudimentary augment planning extracts additional value out of the preoperative CT. However, there remains room for intelligent assessment of hip centers and for deliberate augment planning and execution.