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Design and Fabrication of a Customized Partial Hip Prosthesis Employing CT-Scan Data and Lattice Porous Structures
Jorge Corona-Castuera1, Daniela Rodriguez-Delgado1, John Henao2
1CIATEQ A.C., Av. Manantiales 23-A, Parque Industrial Bernardo Quintana, El Marqués, Querétaro 76246, Mexico.
ACS Omega
|March 22, 2021
Summary
Personalized hip implants using additive manufacturing (AM) and triply periodic minimal surface (TPMS) structures were designed to match patient bone density. This approach optimizes mechanical properties, reducing issues like stress shielding for elderly patients.
Area of Science:
- Biomedical Engineering
- Materials Science
- Orthopedic Surgery
Background:
- Aging populations worldwide necessitate advanced prosthetic devices to address age-related illnesses.
- Current prosthetic components face challenges including stress shielding, reduced mobility, and discomfort.
- Additive manufacturing (AM) offers novel solutions for designing patient-specific implants with tailored properties.
Purpose of the Study:
- To design and manufacture a personalized partial hip implant using AM.
- To utilize patient-specific tomography data for implant customization.
- To incorporate self-supported triply periodic minimal surface (TPMS) cell structures for property modulation.
Main Methods:
- Personalized implant design based on patient tomography data and international standards.
- Employing gyroid-type TPMS cell structures to emulate patient bone density.
- Modulating the mechanical properties of the stainless-steel implant to match bone tissue.
Main Results:
- Successful design and manufacture of a customized stainless-steel hip implant.
- Internal TPMS structure effectively emulated patient-specific bone density.
- Implant's mechanical properties were tuned to be comparable to native bone tissue.
Conclusions:
- This AM methodology enables the creation of personalized hip implants with optimized mechanical performance.
- The approach addresses limitations of current prosthetics and can be adapted for various bone qualities.
- This technology holds significant potential for improving patient outcomes in hip replacement surgery.
