"Osteoporosis and Osteopenia are increasingly being recognized as a health hazard now-a-days. The dynamic characteristics of bone which provides quantitative information concerning the mechanical properties of the bone along with measurement of bone mineral density (BMD) can help in the early detection and better diagnosis of osteoporosis.
The stress waves are generated in the tibia bone by the impact of, impulse force hammer are monitored by accelerometers. The natural frequency of stress wave signal is significantly decreased in osteopenia and osteoporosis subjects indicating decrease in mechanical strength of the bone and bone mineral mass. The technique gives a better understanding of the dynamic behaviour of bone under impact force, and the natural frequency of stress wave Signal is a clear indication of mechanical stiffness of the bone under investigation."