Figure 3: The 2D view (a) and the 3D representation (b) of the exemplary region of the MSC-Scaffold prototype scanned with the confocal microscope (this corresponds with the sector marked with Roman numeral I on the acetabular component of prototype of the THRA endoprosthesis, see Figure 1(b)); the exemplary profile through the spikes’ peaks at which the effective height Hef of spikes and the radius Rx of the spikes’ bases were measured (c).