Hand surgeon specialists consider the hand as a sensory organ - apart from its other functions -- and an extension of the brain towards the environment. They are aware of its specific sensory functions and of the strong connection, which links the hand with the intellectual activity of the brain, the psyche. The face and the hand at the same time are such parts of our body that are always exposed to the environment and both express our thoughts and feelings. The author in his work discusses -- accordingly -- the role of the hand as a sensory organ, then describes some expressive formats, moreover its role in connection and sensitivity. Later on he deals separately with the status of the hand in fine arts and in music. Finally, he discusses the plasticity of the function of the brain -- using data from the professional literature. He concludes that following restoration of the nerve injury, during the regeneration processes the functional reorganization of the brain cortex means the creation of a new "language" for the brain. In these cases the demand of reprogramming arises to regain the best possible sensitivity of the damaged areas of the hand. According to our actual knowledge the professional, special operative management of nerve injuries of the hand is the most important factor of the good outcome; however it is very likely that swift and possible complete brain cortex reorganization, managed by professionals and described in the study in detail, will take a considerable role in the not even distant future. This paper is recommended for young hand surgeons, orthopedist-traumatologist doctors for their everyday work, especially since domestic publication has not been available in this subject. [ABSTRACT FROM AUTHOR]