Personalized image-based templates for precise acetabular prosthesis placement in total hip arthroplasty: a pilot...

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Medical Imaging

Background:

• Accurate acetabular prosthesis implantation is crucial for successful total hip arthroplasty (THA).
• Traditional methods may face challenges in achieving optimal component positioning.
• Patient-specific instrumentation can enhance surgical precision.

Purpose of the Study:

• To evaluate the accuracy of acetabular component implantation using patient-specific templates in THA.
• To compare the effectiveness of individual templates with computer-assisted navigation systems.
• To assess the cost-effectiveness of this novel templating approach.

Main Methods:

• Individualized surgical templates were designed for 12 THA patients based on 3D CT models.
• Templates were conformed to the acetabular contours to guide component rotation and orientation.
• Preoperative and postoperative X-ray and CT scans were used for accuracy assessment.

Main Results:

• The study achieved accurate acetabular component placement in all 12 patients.
• Component abduction angles ranged from 46.7 to 54.3 degrees.
• Component anteversion angles ranged from 11.3 to 18.5 degrees.

Conclusions:

• Patient-specific templates significantly enhance the accuracy of acetabular component implantation in THA.
• Individual templates provide a viable, cost-effective alternative to computer-assisted navigation.
• This approach offers a good cost-performance ratio for improving surgical outcomes.