1 Department of Decision Sciences and MIS, John Molson School of Business, Concordia University, 1455 De Maisonneuve Building, Montreal, Queb., Canada H3G 1M8. rsinfo@sympatico.ca

Osteoporosis is a condition characterized by low bone mass and micro-architectural deterioration leading to non-traumatic fractures of the skeleton. It is a potentially debilitating condition especially for senior citizens. There is growing interest for quantitative ultrasound to measure bone mineral density. However, understanding of ultrasound-bone interaction is limited. Simulating ultrasound propagation of bone can help us better understand ultrasound-bone interaction and provide insight into bone architecture. In this study a mathematical model for the propagation of sound in bone is presented. Results demonstrate the suitability of the proposed modeling approach and the model's capability to reproduce conditions in the lab.