Table 4.
Surface Parameters of Articular Cartilage and Scaffolds Under Native Conditions and After 1 h of Shear Testing at Contact Pressures of 0.04 and 0.08 MPa
| |
Surface parameters |
||
|---|---|---|---|
| Material | NativeRa (μm) | 0.04 MPaRa (μm) | 0.08 MPaRa (μm) |
| Articular cartilage | 0.64±0.11 | 0.79±0.17 | 1.15±0.38 |
| Acell-parallel | 5.09±0.83 | 2.82±0.51 | 2.67±0.95 |
| Acell-perpendicular | 2.76±0.95 | 1.75±0.81 | |
| Acell-random | 3.29±0.49a | 3.41±0.56 | 1.81±0.27 |
| Cell-parallel | 3.86±1.05 | 3.33±0.84 | 1.94±0.40 |
| Cell-perpendicular | 3.71±0.98 | 3.57±1.18a | |
| Cell-random | 3.26±0.67 | 2.87±0.49 | 2.08±0.80 |
a
Denotes statistically significant difference in mean surface roughness between acellular and cellular samples or varying fiber orientations (p-value<0.05). Acell and cell refer to acellular and cellular scaffolds, respectively.