KRYPTONITE Bone Cement is an injectable liquid for up to 8 minutes after mixing (figure 1) then transitions into a highly adhesive taffy state (figure 2) 8-15 minutes after mixing.
Bony Interdigitation
Macro adhesion is achieved through favorable flow characteristics and enhanced by material expansion during polymerization. This is in contrast to polymethylmethacrylate (PMMA) which shrinks during polymerization, potentially pulling away from adjacent structures.
Chemical Adhesion (Micro-Adhesion)
The functional groups within the A and B components of KRYPTONITE Bone Cement are available to chemically bond with organic and inorganic material within the host bone. By contrast, PMMA polymerization occurs via a double bond reaction and provides no functional groups for direct adhesion to bone.
Kryptonite Bone Cement Bonds to Metal.
Figure (4) shows stainless steel
specimens in a lap shear test.
Smooth stainless steel plates bonded with KRYPTONITE Bone Cement and PMMA
- Subjected to ASTM lap shear test
- KRYPTONITE Bone Cement adhesion strength is 5X greater than PMMA. [1]
[1] Testing conducted at the University of Connecticut Health Center. Data on file at Doctors Research Group, Inc.
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updated: 3/30/2010 12:42pm |
