Fig. 4
From: Effect of athletic fatigue damage and the associated bone targeted remodeling in the rat ulna
Non-decalcified slices of rat ulnae and empty osteocyte lacunae statistics. Few empty osteocyte lacunae and almost no obvious microcracks were detected in the Control Group (a), while generation, growth and coalescence of microcracks (black arrows) were observed sequentially in Group Day 7 (b), Group Day 13 (c) and Group Day 19 (d, e). Significant increases of empty osteocyte lacunae, especially around microcracks, were also detected (white arrows) and statistically verified (f)