Biomaterial
Sumary Presentation
Sumary Presentation
Kartei Details
| Karten | 15 |
|---|---|
| Sprache | Deutsch |
| Kategorie | Technik |
| Stufe | Universität |
| Erstellt / Aktualisiert | 26.02.2013 / 06.10.2013 |
| Lizenzierung | Kein Urheberrechtsschutz (CC0) |
| Weblink |
https://card2brain.ch/box/biomaterial
|
| Einbinden |
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Function of Artificial Disc Implants
An intervertebral disc is situated between two vertebras in the spine.
With age or excessive loading, degeneration of the discs can occur, leading to pain and immobility
Material component of an Artificail Disc implant
Metal on Metal
Metal on Polymer
Possible risk and problems with artificial disc implants?
Heterotopic ossification -> leading to a fixation between the two vertebras affecting the range of movement (Before surgery 15°, after 5 years of surgery 3.3°)
Advantages of Artificial Disc Implants?
the patient maintains normal motion
the patient can return earlier to normal day activities
Defintion of Arthroplasty?
Arthroplasty is a surgery procedure, in which a jont is replaced by an artificial device in the human body.
components of a Hip Implant?
Acetabular Shell
femoral Stem and Neck
Femoral Head
Acetabular Liner
Material of a Hip Implant:
- Shell
- Stem and Neck
- Head
- Liner
Shell: Metal / Ceramic (Alumina, Zirconia)
Stem and Neck: Metal (Ti-alloys, Co-Cr-Mo alloys, Stainless steel)
Head: Metal/ Ceramic
Liner: Polymer (PMMA, UHMWPE)
Fixation of a Hip Implant?
Shell and Stem!
Shell: help of external coating using friction, cement or screws for more fixation
Stem: can be fixed with bone cement or cement free
