The brachial plexus is a network of nerve fibers that innervates the skin and the musculature of the upper limb. Its damage could be clinically presented as paresis (i.e. temporary paralysis or weakness) or as paralysis (i.e. complete and permanent function loss). Clinical presentation is multifactorial with damage being mostly caused during birth. Despite its seldom prevalence it is stated as the most common neonatal peripheral nerve damage. The purpose of this paper is to investigate the prevalence of this entity in newborns in The Clinic for Gynecology and Obstetrics at Clinical Hospital Center Rijeka during the period of 01.01.2015. – 31.12.2016. and to establish the correlation between these cases and sex, birth weight and lenght, gestational age, Apgar score and dominant side of the body. Also, one of the aims is to emphasise the importance of early physiotherapeutic intervention to prevent unwanted consequences. Retrospective data base analysis has been performed in The Clinic for Gynecology and Obstetrics at Clinical Hospital Center Rijeka in the previously specified two-year period. The number of 25 newborns has been found with neonatal brachial plexus palsy diagnosis in order to investigate the prevalence in regard to the number of births at the specified period and to establish the prevalence in regard to chosen parameters. Statistical analysis has been performed with Chi (2) square test. In year 2015, the prevalence of the paresis was 5,33 per 1000 live births, while in year 2016 the prevalence was 3,77 per 1000 live births. During statistical scanning of the paresis prevalence by sex, affected side of the body and Apgar test results, no statistical significance was found. Statistical significance was determined only after statistical scanning of the prevalence in regard to birth weight. Brachial plexus paresis is an entity that is difficult to predict and prevent due to the large variability of risk factors. Despite this, with a quality assessment, and later with a comprehensive habilitation, in most cases satisfactory results can be achieved even until complete recovery.