Cementless 3D Printed Implants Match Conventional Cementless Implants in Micromotion Performance

Description

The presented research from the ISTA 2024 conference held in Nashville discusses the development of a cementless uni-compartmental knee device prototype aimed at overcoming the primary failure issue of loosening associated with such implants. The prototype incorporates additively manufactured features designed to enhance fixation stability and promote long-term bone ingrowth. Key study objectives include measuring micro-motion under realistic loading conditions during the critical six to eight-week osseointegration period, and comparing the prototype's performance with conventional cementless devices regarding stiffness and micro-motion characteristics. Experimental results indicate that the custom micro-motion rig effectively elucidates the effects of device design features on performance metrics. The presentation concludes that while the current unoptimized prototype shows comparable outcomes to established devices, further refinements are necessary to enhance its function and reduce micro-motion to acceptable levels.

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