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BoneMaster®

BoneMaster® is an advanced biomimetic coating technology with the biological benefits of hydroxyapatite and an enhanced needle-like nanostructure based on apatite crystallites found in bone.  Through its combination of chemistry and surface topography BoneMaster® offers a number of unique clinical advantages.

Due to the positive interactions between BoneMaster® and Bone, the secondary fixation of the implant occurs more rapidly which improves the implant stability and thereby the longevity of the implant.


Enhanced implant stability
 
Due to its superior characteristics BoneMaster® produces a good and fast bony integration. Additionally BoneMaster® retains the underlying titanium macrostructures, such as PPS, due to its exceptional thickness of only 5μm. By so doing BoneMaster® allows a direct anchoring between the newly formed bone and the implant, which leads to an improved implant stability.  The increased implant stability of BoneMaster® coated implants has been demonstrated in various animal models using push-out and pull-out tests.

Reduced fibrous growth

BoneMaster® demonstrates both the osteoconductivity of hydroxyapatite and the unique needle-like nanostructure that closely resembles the apatite crystals found in bone.  Through these properties BoneMaster® accelerated the bony integration and in so doing reduced fibrous growth, as demonstrated in the figure below


Bone/implant contact after 3 month to a) titanium; b) BoneMaster® coated titanium (see image)


Increased bone density
In a recent clinical study, BoneMaster® coated stems showed significantly greater bone density, compared to identical plasma-sprayed HA stems.


 

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References

1. Hallan G, Lie S A, Furnes O, Enesaeter L B, Vollset S E, Havelin L I. (2007) Medium and long term performance of 11 516 uncemented
primary femoral stems from the Norwegian arthroplasty Register. JBJS 89: 1574 – 1580
2. Rößler S., Sewing A., Stölzel M., Born R., Scharnweber S., Dard M., Worch H. (2002) Electrochemically assisted deposition of thin
calcium phosphate coatings at near-physiological pH and temperature, J Biomed Mater Res 64A: 655–663
3. Bøe B, Heier T, Snorrason F, Nordsletten L. (2006) Change in bone density and implantation AV Taperloc cementless hip prosthetic with
two different hydroxyapatite coatings. A prospective randomized trial. Nordic Orthopaedic Federation 53rd Congress, Oslo, Norway.
4. Schmidmaier G., Wildemann B., Schwabe P., Stange R., Hoffmann J., Südkamp N.P., Haas N.P., Raschke M. (2002) A new
electrochemically graded hydroxyapatite coating for osteosynthetic implants promotes implant osteointegration in a rat model. J
Biomed Mater Res 63: 168–172,
5. Mont M. A., Hungarford D. S. (1997) Proximally Coated Ingrowth Prosthesis. A Review. Clin Orthop 344: 139-149