Development of a Hip Joint Socket by Finite-Element-Based Analysis for Mechanical Assessment

Area of Science:

• Biomedical Engineering
• Orthopedics
• Prosthetics and Orthotics

Background:

• Conventional prosthesis sockets often lack functionality and comfort, leading to a documented 58% patient rejection rate.
• Current designs fail to adequately consider patient needs, resulting in poor fit, discomfort, and low acceptance of prosthetic devices.

Purpose of the Study:

• To develop and evaluate an improved hip joint socket design using finite element method (FEM).
• To address the limitations of conventional socket designs by focusing on patient functionality, comfort, and usability.
• To generalize the findings for patients with oncological amputations and similar conditions.

Main Methods:

• Utilized the finite element method (FEM) for evaluating and optimizing hip joint socket designs.
• Collected data on existing prosthesis socket interactions to identify design flaws.
• Developed and physically prototyped a new ergonomic socket design based on FEM analysis.

Main Results:

• The new ergonomic socket design achieved a 60% increase in patient compliance.
• Demonstrated improved gait performance, corrected postures, and enhanced user-fit interaction.
• FEM analysis provided structural insights, reducing the need for multiple physical prototypes and potentially lowering costs and development time.

Conclusions:

• Finite element method is a valuable tool for improving the design and structural analysis of prosthesis sockets.
• The developed ergonomic socket design significantly enhances patient compliance, functionality, and usability.
• This approach offers a more efficient and cost-effective method for prosthetic device development.