Replies to post #40051 on SiNtx Technologies Inc (SINT)

[boston745]

This is the materials main drawback as a full implant in hip, despite over 30 years of successful use in spine, and is likely why Sintx is working with 3D Ceramic to improve its additive manufacturing techniques and focusing on coatings in the shorter term.
Armor business was also acquired and setup to help provide revenue as it continues to improve its 3D manufacturing ability.

However, as advantageous as the mechanical, tribological, chemical and biological properties of silicon nitride are, the comparatively high modulus of elasticity poses a challenge for the application of load-bearing stems for arthroplastic implants. Even though modulus reduction can be achieved by using porous RBSN instead of dense pressureless SSN, the modulus gradient between the implant and cortical bone is still too large to suppress effectively stress the shielding of hip endoprosthetic implants, in contrast to intervertebral spacers that have enjoyed lasting success for more than thirty years. To address this issue, modern ceramic processing techniques such as additive manufacturing may be enlisted to produce highly porous devices with a substantially reduced modulus of elasticity.

3DCERAM SINTO INC. AND SINTX TECHNOLOGIES ANNOUNCE COLLABORATION TO DEVELOP MATERIALS AND TECHNOLOGIES FOR ADDITIVE MANUFACTURING OF ADVANCED CERAMICS
https://ir.sintx.com/news-events/press-releases/detail/215/3dceram-sinto-inc-and-sintx-technologies-announce