The diagnosis and treatment of brachial plexus lesions have developed remarkably in recent decades. The knowledge of anatomy and histology, the physiology of lesions, and the definition of ideal conditions for nervous regeneration created the basic support, which caused the use of microsurgery to improve the surgical results of these lesions. On the other hand, patients used to be seen by specialists from different fields, no one saw the need to join efforts in order to achieve a multidisciplinary approach. These lesions essentially affect young males who belong to a social and professional environment in which motorcycles are usually used as their main means of transport. The correct diagnosis of this histology is based on a clinical analysis of each case, which requires separate evaluations in some instances. Only thus is it possible to establish a therapeutic plan in which physiotherapy plays a permanent and vital role. Complementary studies always included electromyography, which seems to be a useful guide to the progression of the lesions. For operated cases, cervical myelography, ultrasonography and magnetic resonance seem to be a useful aid to characterise the lesions and define the prognosis. The therapeutic decisions must be early and convenient. We found all types of nervous lesions and performed various types of surgery with microsurgery techniques, mostly using nerve grafts. In the case of infra-ganglion lesions. nerve grafts were used to neurotize peripheral nerves from proximal stumps. In case of supra-ganglionic complete lesions, we used the accessory spinal nerve, the motor branches of the cervical plexus and the intercostal nerves. In relation to peripheral neurolization, we tried to establish a certain order, beginning with reinnervation of muscles responsible for proximal function.