Virtual anatomical reconstruction of large acetabular bone defects using a statistical shape model

Abstract

Custom implants are used to treat patients with large acetabular bone defects. To quantify the bone defect and to initialize the implant design, a virtual anatomical reconstruction of the bone needs to be performed. Our SSM-based reconstruction approach was used to overcome the limitations of the mirrored contralateral method and improves upon other SSM reconstruction techniques. The reconstruction errors for the acetabular direction, the hip joint center and the acetabular radius were, respectively: , 2.6 mm and 0.7 mm. We believe that our method can be an essential tool in the planning and the design of custom implants.

Keywords:

• Statistical shape model
• acetabular defect
• reconstruction
• custom implants

Acknowledgements

For the collection of the CT-scan data, we would like to thank Dr. Vanden Berghe Thomas from the Department of Radiology of the AZ Oudenaarde hospital.

Notes

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by IWT - Agentschap voor Innovatie door Wetenschap en Technologie, Koning Albert II-laan 35, bus 16, 1030 Brussel, Belgium, [120565].