Perm Medical JournalPerm Medical Journal0136-14492687-1408Eco-Vector329110.17816/pmj30294-97Research ArticleCOMPARATIVE ANATOMY OF DYNAMIC CHANGES IN MALE MEDIAN AND SCIATIC NERVE EPINEURIUM IN POSTNATAL ONTOGENESISBalandinaI A-ZheltikovaT N-TorsunovaYu P-MelnikovI Imelnikov_60@inbox.ru15042013302949712072016Copyright © 2013, Balandina I.A., Zheltikova T.N., Torsunova Y.P., Melnikov I.I.2013Aim. To compare the changes in male median and sciatic nerve epineurium in the period of postnatal ontogenesis. Materials and methods. Autopsy material from 80 men aged 17–90 who died from cerebrocranial injuries and had no peripheral nervous system pathology in anamnesis was investigated. The material was divided into age groups according to human age ontogenesis periodization. Median and sciatic nerve epineurium in ontogenesis was investigated and compared using micromorphometrical and histological methods. Results. In process of ontogenesis, 1,7 fold (by 41%) increase in thickness of sciatic nerve epineurium and 2,1 fold (by 52,7%) of median nerve epineurium was registered.. Conclusion. Age dynamics of epineurium consists in its even increase and two periods of intensive growth: sciatic nerve – the second period of mature age and old age, median nerve – the first period of mature age and elderly age.[Асатиани Д. Л. Принципы организации внутриствольной структуры нервов верхней конечности (фило-онтогенетический анализ): автореф. дис. … д-ра биол. наук. Киев 1989; 32.][Багрянская М. Ф. Внутриствольная структура плечевого сплетения человека. Вопросы морфологии нервной системы. М. 1960; 136–143.][Берснев В. П. Итоги и перспективы изучения проблемы травмы периферической нервной системы. СПб. 2003; 115–135.][Гасымов Е. К. Структурные преобразования эпиневральной оболочки перифери- ческих нервов в постнатальном онтогенезе. Астрахань 1996; 46.][Гусейнова Г. А. Ультраструктурные особенности периферических нервов человека. Астраханский медицинский журнал 2007; 2: 61–62.][Калмин О. В. Индивидуальная, возрастная и билатеральная изменчивость пучкового строения седалищного нерва. Ростов н/Д 2000; 35–36.][Barrington M. J., Lai S. L., Briggs C. A. Ultrasound-guided midthigh sciatic nerve block-a clinical and anatomical study. Reg. Anest. Pain. Med. 2008; 52: 76.][Lefferet R. Brachial plexus injuries. N. York: Churchill Livingstone 2001.][Slooff A. C. Brachial plexus impairment abirthtrauma. Obstet Gynecol. 2004; 169 (1): 230.]