Biomedical Design of a Total Hip Replacement Implant
Aleeza Zar
OVERVIEW
This biomedical design project focused on the conceptual design and prototyping of a total hip replacement implant. The project explored how implant geometry, surface features, fixation methods, and material selection influence joint stability, wear, and long-term performance. Through CAD modeling, materials research, and additive manufacturing, the team developed a scaled physical prototype to evaluate manufacturability and design trade-offs, while grounding decisions in orthopedic literature and clinical considerations.
HighlightS
- Designed a total hip replacement system including the femoral stem, femoral head, and acetabular cup using CAD tools.
- Investigated implant fixation strategies, including cementless fixation and surface treatments to improve osseointegration.
- Analyzed the effects of femoral head size, offset, and acetabular surface dimpling on joint stability and dislocation risk.
- Conducted biomaterials research to evaluate candidate implant materials and coatings, including hydroxyapatite and diamond-like carbon (DLC).
- Optimized 3D print orientation, scale, and infill to balance print time, structural integrity, and feature resolution.
- Identified manufacturing limitations of desktop 3D printing, particularly in reproducing fine surface features and intricate geometries.
- Delivered a scaled physical prototype and technical poster demonstrating design rationale, material justification, and clinical relevance.
- Contributed as Project Administrator, coordinating milestones, managing deliverables, and supporting technical documentation.
SKILLS
Orthopedic Implant DesignBiomedical CAD ModelingAdditive Manufacturing (3D Printing)Design for ManufacturabilityBiomaterials ResearchImplant Fixation MethodsSurface Engineering ConceptsMaterial Selection for Medical DevicesEvidence-Based Design (Literature-Driven)Manufacturing Limitations Analysis
Aleeza Zar
Biomedical Engineer
I'm a biomedical engineer with expertise in human-centered design, control systems, and clinical research.
I've led ergonomic design for Formula SAE vehicles, developed firmware for advanced vehicle controls, and conducted molecular biology research.
I combine technical depth in CAD, simulation, and programming with strong collaboration skills and a passion for healthcare innovation and patient-centered solutions.
I'm a biomedical engineer with expertise in human-centered design, control systems, and clinical research.
I've led ergonomic design for Formula SAE vehicles, developed firmware for advanced vehicle controls, and conducted molecular biology research.
I combine technical depth in CAD, simulation, and programming with strong collaboration skills and a passion for healthcare innovation and patient-centered solutions.
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