Fig. 3
Virtual long bone histology of MPCM-LH-26189 b. a 3D model of the tibia diaphysis (the red double arrow indicates the location where the virtual thin section in b was made). b Transverse section of the tibia showing a thin, poorly vascularised cortex and cell lacunae in black in the cortex. The inner region of the cortex is eroded, thereby giving place to a large medullary cavity, which has been infilled in with rock matrix. This matrix has multiple inclusions of different densities, but is generally similar in grey value to the bone, due to a similar density and thus X-ray attenuation coefficient. c 3D model of the radius diaphysis (the ochre band with a red double arrow on top indicates the location of the sectioned portion shown in (e)). d Transverse section of the radius showing a microstructure similar to that of the tibia, although with a slightly more vascularised cortex (the cortex and medullary cavity are crushed). e Longitudinal section of the radius (made according to the red double arrow in the inset) showing the longitudinal orientation of the vascularisation. Abbreviations: Cb: cortical bone, Es: erosion surface, Mc: medullary cavity, Ol: osteocyte lacunae, Pvc: primary vascular canals
