Modelling the Effects of Growth and Remodelling on the Density and Structure of Cancellous Bone.
- Resource Type
- Academic Journal
- Authors
- Martin BL; Marine Spatial Ecology Laboratory, School of the Environment, The University of Queensland, Level 5, Goddard Building, St. Lucia, QLD, 4072, Australia.; Reynolds KJ; Medical Device Research Institute, College of Science and Engineering, Flinders University, Tonsley Campus, 1284 South Rd, Clovelly Park, SA, 5042, Australia.; Fazzalari NL; Medical Device Research Institute, College of Science and Engineering, Flinders University, Tonsley Campus, 1284 South Rd, Clovelly Park, SA, 5042, Australia.; Bottema MJ; Medical Device Research Institute, College of Science and Engineering, Flinders University, Tonsley Campus, 1284 South Rd, Clovelly Park, SA, 5042, Australia. murk.bottema@flinders.edu.au.
- Source
- Publisher: Springer Country of Publication: United States NLM ID: 0401404 Publication Model: Electronic Cited Medium: Internet ISSN: 1522-9602 (Electronic) Linking ISSN: 00928240 NLM ISO Abbreviation: Bull Math Biol Subsets: MEDLINE
- Subject
- Language
- English
A two-stage model is proposed for investigating remodelling characteristics in bone over time and distance to the growth plate. The first stage comprises a partial differential equation (PDE) for bone density as a function of time and distance from the growth plate. This stage clarifies the contributions to changes in bone density due to remodelling and growth processes and tracks the rate at which new bone emanates from the growth plate. The second stage consists of simulating the remodelling process to determine remodelling characteristics. Implementing the second stage requires the rate at which bone moves away from the growth plate computed during the first stage. The second stage is also needed to confirm that remodelling characteristics predicted by the first stage may be explained by a realistic model for remodelling and to compute activation frequency. The model is demonstrated on microCT scans of tibia of juvenile female rats in three experimental groups: sham-operated control, oestrogen deprived, and oestrogen deprived followed by treatment. Model predictions for changes in bone density and remodelling characteristics agree with the literature. In addition, the model provides new insight into the role of treatment on the density of new bone emanating from the growth plate and provides quantitative descriptions of changes in remodelling characteristics beyond what has been possible to ascertain by experimentation alone.
(© 2024. The Author(s).)