**25. The re-vascularization of the injured muscle**

A fundamental process in the field of reparation of the injured muscle, is represented by the re- vascularization of the injured area (Snow, 1973; Järvinen, 1976; Józsa et al., 1980;). The restoration of vascularization in the injured area, represents the first sign of reparation and it is a pre-requisite for the successive morphological and functional recuperation of the injured muscle. The new capillary network has origin of the survived trunks of the blood vessels which go towards the centre of the trauma area (Järvinen, 1976) and they go to supply the same area with an adequate amount of oxygen allowing, in such a way, the successive functional restoration of the aerobic metabolism, which represents, in its turn, a fundamental stage in the field of repair process of the myofibers. The young myotubes are supplied with few mito‐ chondria and only show a moderate functional capacity in the field of the energetic aerobic restoration mechanism but they contextually present a clear increase in the energetic anaerobic restoration mechanism (Järvinen and Sorvari, 1978). In any case, during the final phases of tissue repair, the aerobic metabolism makes up the principle energetic resource for the multinuclear myofibers (Järvinen and Sorvari, 1978). This particular repair procedure, also supplies a plausible explanation of why the regeneration of the myofibres doesn't progress further than the precocious formation phase of slim myotubes, up until when the growth of a sufficient capillary network can't assure the necessary oxygen contribution to a satisfying functional restoration of the aerobic mechanism.
