3D Printed Anatomy-Specific Fixture for Consistent Glenoid Cavity Position in Shoulder Simulator

Area of Science:

• Biomechanical Engineering
• Medical Imaging
• Additive Manufacturing

Background:

• Consistent anatomical positioning is crucial for reliable biomechanical testing.
• Traditional fixation methods present challenges in achieving precise and repeatable anatomical alignment.
• Image-based 3D printing offers a potential solution for fabricating customized biomechanical supports.

Purpose of the Study:

• To present a design guide for fabricating fixation blocks using image-based 3D printing.
• To demonstrate a method for achieving consistent anatomical structure positioning in biomechanical testing.
• To explore the adaptability of this technique for various anatomical structures.

Main Methods:

• Computed Tomography (CT) scanning of the anatomy of interest.
• 3D reconstruction of anatomical data.
• Computer-Aided Design (CAD) software for modifying the 3D model and creating a standardized fixture block by subtracting the anatomy from a base fixture block.

Main Results:

• Achieved strong immobilization of anatomical specimens.
• Enabled controlled and consistent positioning of anatomical features relative to the testing system.
• Demonstrated ease of modification and adaptation of fixture blocks using CAD software.

Conclusions:

• The image-based 3D printing approach preserves bony anatomy integrity.
• Provides repeatable and consistent anatomical positioning for biomechanical testing.
• This method is adaptable for diverse anatomical structures and biomechanical applications.