[Changes in the area of the bone fracture in the posttraumatic period].

Theoretical basis of medical biotribonics are analyzed. This is a new research direction, bordering traumatology and tribology (the science of friction). For the first time a bone fracture is regarded as a biotribologic system in which bone fragments are in constant movement. A biotribologic process model has been created, describing the changes at the site of bone fracture in the posttraumatic period. New terms and concepts are explained and defined. The basic trends in the development of medical tribonics are distinguished.