Injuries and diseases of the human locomotor appa ratus are an important medical and social problem, and the importance of this problem is now increasing.Pathology of spinal column is an important part of skeletal pathology, because the spinal column provides force balance in the human body. Pathology of the spinal column is observed in people of various age groups: dys plasia is the predominant pathology of spinal column in children; injuries and infections are predominant pathologies of the spinal column in young people of working age; degeneration, dystrophy, and tumors are predominant pathologies of the spinal column in elderly people. Modern orthopedic practice requires solution of complex diagnostic and therapeutic problems based on progress in science and technology. Automatic informa tion systems provide new opportunities for diagnosis and therapy. Such systems are used for treatment of various diseases of the spinal column. Diagnosis of spinal column fracture is fairly obvious because of clear X ray and clini cal semiotics. However, interpretation of spondylograms requires adequate information about spinal column dam age and normal spinal column X ray anatomy. Chronic degenerative, dystrophic, and tumoral spinal column pathologies are particularly difficult to diagnose.Diagnosis of spinal column pathology in modern orthopedic vertebrology includes X ray examination as well as orthopedic, neurosurgical, and radiological expert evaluation. The use of computer high technology is very promising for diagnosis and therapy of spinal column pathology. However, contemporary methods of X ray diagnosis of early and subclinical stages of spinal column pathology are insufficiently effective because they do not provide adequate estimates of mineral density of bone tis sue. In addition, the methods of X ray diagnosis exert radiation load on patients and medical personnel. Methods of magnetic resonance tomography, computer tomography, and densitometry are rather expensive, which imposes limitation on their use. The X ray pattern represents structure rather than function of bone tissue. Stabilometry provides indirect estimates of force balance of the human body. It should be noted that methods of spinal column pathology diagnosis based on mechanical properties of the spinal column are insufficiently used. Spinal column pathology primarily modifies elastic prop erties of spinal column segments. It should be also noted that mechanical load is characteristic of the human loco motor system. Examination of human body reaction to dosed mechanical load dates back to the XIX century. In 1890, V. M. Bekhterev suggested a device for examination of knee reflex [3]. This device was based on a mechanical pendulum with a standard weight and amplitude. This method was not widely used because of lack of sensitive sensors and automatic systems of data processing.There are methods of postmortem determination of spinal column strength, but they cause spinal column destruction [4]. There are methods based on sound prop agation in bone tissu...