Publication detail

Advanced Machining of Joint Implant UHMWPE Inserts

PÍŠKA, M. URBANCOVÁ, K.

Czech title

Pokročilé obrábění kloubních UHMWPE implantátů

English title

Advanced Machining of Joint Implant UHMWPE Inserts

Type

journal article in Web of Science

Language

en

Original abstract

The modern orthopaedic implants for applications in hips, knees, shoulders, and spines are composed of hard metal alloys or ceramics and a tribological sub-component that is made of soft materials, with good frictional properties—e.g., UHMWPE (Ultra High Molecule Weight Polyethylene). The UHMWPE implants need to be machined into their final shape after the polymerization and consolidation into a blank profile or near net shaped implant. Thus, machining is a crucial technology that can generate an accurate and precise shape of the implant that should comply with the joints’ function. However, the machining technology can affect the topography and integrity of the surface, transmitted stresses, and resistance to wear. Technology, cutting tools, and cutting conditions can have an impact on the physical and mechanical properties of the entire implant and its longevity. This paper shows an effective and competitive technology for acquiring high-quality insert shape, dimensions, and surface, needed especially for customized implants.

Czech abstract

Moderní ortopedické implantáty pro aplikace v oblasti kyčlí, kolen, ramen a páteře se skládají ze slitin kovů nebo keramiky a obsahují dále tribologické vložky, která jsou vyrobeny z měkkých materiálů s dobrými třecími vlastnostmi – např. UHMWPE (polyetylén s ultra vysokou molekulovou hmotností). Implantáty UHMWPE je třeba po polymeraci opracovat do konečného tvaru implantátu blízkého tvaru kloubu. Obrábění je tedy klíčovou technologií, která dokáže vytvořit přesný a přesný tvar implantátu, který by měl odpovídat funkce kloubů. Technologie obrábění však může ovlivnit topografii a integritu povrchu, přenášená napětí a odolnost proti opotřebení. Technologie, řezné nástroje a řezné podmínky mají vliv na fyzikální a mechanické vlastnosti celého implantátu a jeho životnost. Tento dokument ukazuje efektivní a konkurenceschopnou technologii pro získání vysoce kvalitního tvaru této části, rozměrů a povrchu, potřebného zejména pro personalizované implantáty na míru.

English abstract

The modern orthopaedic implants for applications in hips, knees, shoulders, and spines are composed of hard metal alloys or ceramics and a tribological sub-component that is made of soft materials, with good frictional properties—e.g., UHMWPE (Ultra High Molecule Weight Polyethylene). The UHMWPE implants need to be machined into their final shape after the polymerization and consolidation into a blank profile or near net shaped implant. Thus, machining is a crucial technology that can generate an accurate and precise shape of the implant that should comply with the joints’ function. However, the machining technology can affect the topography and integrity of the surface, transmitted stresses, and resistance to wear. Technology, cutting tools, and cutting conditions can have an impact on the physical and mechanical properties of the entire implant and its longevity. This paper shows an effective and competitive technology for acquiring high-quality insert shape, dimensions, and surface, needed especially for customized implants.

Keywords in Czech

obrábění; UHMWPE; implantát; integrita povrchu; tribologie

Keywords in English

machining; UHMWPE; implant; surface integrity; tribology

Released

01.01.2022

Publisher

MDPI

Location

Basil, Swizerland

ISSN

2075-1702

Volume

10

Number

11

Pages from–to

1–19

Pages count

19

BIBTEX


@article{BUT179800,
  author="Miroslav {Píška} and Kateřina {Urbancová},
  title="Advanced Machining of Joint Implant UHMWPE Inserts",
  year="2022",
  volume="10",
  number="11",
  month="January",
  pages="1--19",
  publisher="MDPI",
  address="Basil, Swizerland",
  issn="2075-1702"
}