3DMatrix porous coating
DJO Surgical has chosen an innovative approach to an industry standard for porous coating on their implants. This coating consists of small, three-dimensional (non-spherical) beads. The porous material is either commercially pure titanium or CoCr alloy, depending on the base substrate. The non-spherical shape of the beads provides more points of contact and a much rougher surface area.
Superior Surface Texture
The 3DMatrix® porous coating is much rougher and aggressive than spherical beads, providing for more bone apposition. In a study for bone ingrowth, 3DMatrix porous coating outperformed spherical beads2.
Aggressive Porous Coating
The 3DMatrix has a thickness of 0.5mm (a minimum of two bead layers), bead size 180-850 microns, and pore size of 250-450 microns. The porosity volume represents 61%. The pore size of 100 to 500 microns has been shown to be optimal for bone ingrowth 1,2.
3DMatrix Porous Coating - 100x
3DMatrix Porous Coating - 40x |
 |
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| 3DMatrix Porous Coating (cross-section) - 50x | Competitor's Porous Coating (cross-section) - 50x |
| Bone Ingrowth Study | ||
Spherical Beads |
3DMatrix |
|
| Interface sheer strength, MPa | 33.29 |
40.3 |
| Corital bone apposition, % | 38.5 |
63.1 |
| Cancellous bone apposition, % | 13.6 |
22.0 |
1. Mont MA, Hungerford DS: Proximally Coated Ingrowth Prosthesis. A Review. ClinArthop 344: 139-149, 1997.
2. Data on file at DJO Surgical.