The development of a surface arthroplasty for the elbow

Area of Science:

• Orthopedic surgery
• Biomedical engineering
• Anatomy

Background:

• Constrained and semiconstrained cemented elbow arthroplasties often exhibit poor function due to complex joint kinematics, anatomy, and load distribution.
• Resurfacing arthroplasty offers a potential solution by aiming to reproduce normal joint geometry and restore ligament balance.

Purpose of the Study:

• To develop a method for obtaining detailed geometry of the distal humeral joint surface and olecranon fossa.
• To design porous-coated components for elbow resurfacing based on anatomical data.
• To establish a precise surgical technique for component implantation.

Main Methods:

• A novel method was employed to capture the precise geometry of the distal humeral joint surface and olecranon fossa.
• The gathered anatomical information guided the design of custom porous-coated components for resurfacing the trochlea, capitellum, and olecranon fossa.
• A specialized surgical technique was developed for minimal, precise subchondral bone removal to ensure exact component fit on the ulna and humerus.

Main Results:

• The developed method provided accurate geometric data for component design.
• Custom porous-coated components were designed to resurface key elbow joint surfaces.
• A technique for precise bone preparation was established, facilitating exact component fit.

Conclusions:

• Elbow resurfacing using porous-coated components, guided by precise anatomical data and surgical technique, has the potential to restore normal joint kinematics and load-bearing.
• This approach may lead to improved function and pain relief in patients undergoing elbow arthroplasty.