Does a Commercially Available Augmented Reality-based Portable Hip Navigation System Improve Cup Positioning During...

Area of Science:

• Orthopedic surgery
• Surgical navigation technologies
• Hip replacement surgery

Background:

• Portable navigation systems aim to enhance surgical accuracy and ease of use.
• Augmented reality (AR) navigation using smartphones is a novel system for hip replacement.
• Limited studies compare AR navigation with conventional hip replacement techniques.

Purpose of the Study:

• To evaluate if commercially available AR navigation improves acetabular cup positioning during total hip arthroplasty (THA).
• To compare operative factors, clinical outcomes (HOOS), and postoperative courses between AR navigation and conventional THA techniques.

Main Methods:

• A randomized trial involving 72 patients undergoing THA.
• Patients were assigned to either AR navigation or conventional technique for cup placement.
• Primary outcome was cup positioning accuracy; secondary outcomes included operative time, clinical scores, and complications.

Main Results:

• AR navigation showed a statistically significant improvement in cup positioning accuracy (p < 0.001).
• A higher percentage of cups were placed within the Lewinnek safe zone using AR navigation (94% vs. 64%, p < 0.001).
• No significant differences were observed in operative time, clinical improvement (HOOS), or complication rates between the groups.

Conclusions:

• Commercially available AR navigation offers a slight improvement in acetabular cup positioning for THA.
• The observed improvements in accuracy did not translate to better clinical scores or reduced complication rates.
• Further research is needed to determine the clinical significance and cost-effectiveness of AR navigation in THA before widespread adoption.