Advanced topology of triply periodic minimal surface structure for osteogenic improvement within orthopedic metallic screw.
Mater Today Bio
; 27: 101118, 2024 Aug.
Article
en En
| MEDLINE
| ID: mdl-38975238
ABSTRACT
Metallic screws are one of the most common implants in orthopedics. However, the solid design of the screw has often resulted in stress shielding and postoperative loosening, substantially impacting its long-term fixation effect after surgery. Four additive manufacturing porous structures (Fischer-Koch S, Octet, Diamond, and Double Gyroid) are now introduced into the screw to fix those issues. Upon applying the four porous structures, elastic modulus in the screw decreased about 2â¼15 times to reduce the occurrence of stress shielding, and bone regeneration effect on the screw surface increased about 1â¼50 times to improve bone tissue regrowing. With more bone tissue regrowing on the inner surface of porous screw, a stiffer integration between screw and bone tissue will be achieved, which improves the long-term fixation of the screw tremendously. The biofunctions of the four topologies on osteogenesis have been fully explored, which provides an advanced topology optimization scheme for the screw utilized in orthopedic fixation.
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Mater Today Bio
Año:
2024
Tipo del documento:
Article
País de afiliación:
China