Shoulder Impingement

Knee Information

Cementing

Bone cements are made up of two primary components:

(1) a powder containing copolymers based on the substance methacrylate (PMMA, PMA)
(2) a liquid monomer methylmethacrylate (MMA).

The powder also contains an initiator di-benzoylperoxide; the liquid contains the activator N,N-dimethyl-p-toluidine. Both substances activate the polymerization process and enable a reaction at room temperature. A special opaque agent (zirconium dioxide or barium sulphate) is added to the powder for radiographic contrast. The powder component in antibiotic loaded bone cements additionally may contain an antibiotic such as gentamicin.


The powder component	The liquid is then added

The two are mixed together	The cement is then applied to the components, which are placed into position and held till the cement sets (approximately 10 minutes)

Links

http://www.hipreplacement.co.uk/Bonecmnt.html

Why receive a partial verses a total knee replacement?	UKR Home Page
Preoperative Planning	Partial knee replacements- Saw bone demonstration
Surgical technique	Cementing
After knee replacement surgery	Complications of knee replacement surgery