This model simulates remodeling of the trabecular bone at the cellular level due to changes in loading conditions. Fluctuations in bone density carried out by osteocytes, osteoblasts, and osteoclasts within the margins of a transverse cross section of bone are representing visually. Users can assess bone remodeling as a function of age and gender. The different load settings, meant to reflect bed-rest, normal activity, or high activity, can be changed in real time so that a user can see how cell behavior and counts react.