Methyl methacrylate (MMA) is the basic component of bone cements.
To use it, a dough is prepared from the liquid and powder by mixing
right before application, which is normally done by the operating
team. During its working phase the dough is then inserted into the
tissue where polymerization is completed. Thus, the final implant
polymethyl methacrylate (PMMA) is only created at the implantation
site. Besides methyl methacrylate, bone cements sometimes contain
other methacrylates, such as butyl methacrylate. To achieve X-ray
opacity, radiopacifiers (zirconium dioxide or barium sulfate) are
added to the powder. Both the liquid and powder components contain
additives (initiator and activator) that launch polymerization and
control the set ting when mixed together. Moreover, softener and
emulsifiers are some times used. The addition of antibiotics to the
powder component in order to prevent or treat infections has become
especially important. Commercial bone cements differ in composition
and the course of curing. Some are designed for high and others for
low viscosity. The way the user handles and applies the cement
always crucially influences the quality of the implant. This is why
clear and comprehensive information about the cements should be
available to show the user how all the relevant factors work It
should also be possible together and how they depend on each
other."
General
Imprint: |
Springer-Verlag
|
Country of origin: |
Germany |
Release date: |
September 2011 |
First published: |
2000 |
Authors: |
Klaus-Dieter Kuhn
|
Dimensions: |
235 x 155 x 15mm (L x W x T) |
Format: |
Paperback
|
Pages: |
272 |
Edition: |
Softcover reprint of the original 1st ed. 2000 |
ISBN-13: |
978-3-642-64115-2 |
Categories: |
Books >
Medicine >
Surgery >
Orthopaedics & fractures
Promotions
|
LSN: |
3-642-64115-6 |
Barcode: |
9783642641152 |
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