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The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

Published on: August 4, 2022

Custom-made implants for massive acetabular bone loss: accuracy with CT assessment.

Matteo Romagnoli¹, Marco Zaffagnini², Eleonora Carillo³

¹Ortopedia e Traumatologia Rizzoli Argenta, Via Nazionale Ponente 5, 44011, Argenta, FE, Italy.

Journal of Orthopaedic Surgery and Research

|September 30, 2023

Summary

This summary is machine-generated.

Custom-made acetabular implants show promising accuracy in revision hip arthroplasty. Postoperative positioning closely matches preoperative plans, ensuring reliable outcomes for complex cases.

Keywords:

Accuracy Acetabular revision Arthroplasty Bone loss Computer tomography Custom-made Hip Patient-specific Positioning Revision total hip arthroplasty (rTHA)

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Area of Science:

Orthopedic Surgery
Biomedical Engineering
Radiology

Background:

Revision total hip arthroplasty often requires custom-made implants for significant acetabular bone loss.
Assessing the precision of these custom implants is crucial for successful patient outcomes.

Purpose of the Study:

To evaluate the accuracy of custom-made acetabular implant positioning.
To compare preoperative planning with postoperative results using CT scans.

Main Methods:

Retrospective analysis of three patients receiving custom-made acetabular prostheses.
3D CT analysis for preoperative planning and comparison with postoperative CT scans.
Evaluation of center of rotation, anteversion, inclination, screw placement, and bone contact.

Main Results:

Satisfactory accuracy in implant positioning was observed across the cases.
One case showed minor malpositioning (>10 mm posterization of CoR), while others were within 10 mm.
Anteversion and inclination differences were within 10° compared to planned positions.

Conclusions:

Custom-made acetabular prostheses demonstrate promising accuracy in revision hip arthroplasty.
Preoperative planning and postoperative CT comparison confirm reliable implant positioning.