Hand trauma is a frequent pathology in plastic and reconstructive surgery department. Very often in the trauma mechanism the nerves are involved, being damaged. It is well known that the nerve regeneration process is slow and most frequently not complete, that is why new reconstruction methods are being studied. The purpose of our study is to compare two types of reconstruction procedures performed in Wistar Albino rat’s sciatic nerve, after the nerve was injured, and to determinate the nerve regeneration process using in vivo and in vitro electric conductivity.