Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Variations of the origin of collateral branches emerging from the posterior aspect of the brachial plexus. | Journal of Brachial Plexus and Peripheral Nerve Injury Research article BioMed Central Open Access Variations of the origin of collateral branches emerging from the posterior aspect of the brachial plexus Luis Ernesto Ballesteros and Luis Miguel Ramirez Address Medicine Faculty Universidad Industrial de Santander Bucaramanga Colombia Email Luis Ernesto Ballesteros - lballest56@ Luis Miguel Ramirez - lmra3@ Corresponding author Published 23 June 2007 Received 18 February 2007 Journal of Brachial Plexus and Peripheral Nerve Injury 2007 2 14 doi 1749-7221-2- Accepted 23 June 2007 14 This article is available from http content 2 1 14 2007 Ballesteros and Ramirez licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background The frequency of variation found in the arrangement and distribution of the branches in the brachial plexus make this anatomical region extremely complicated. The medical concerns involved with these variations include anesthetic blocks surgical approaches interpreting tumor or traumatic nervous compressions having unexplained clinical symptoms sensory loss pain wakefulness and paresis and the possibility of these structures becoming compromised. The clinical importance of these variations is discussed in the light of their differential origins. Methods The anatomy of brachial plexus structures from 46 male and 11 female cadaverous specimens were studied. The 40-80 year-old specimens were obtained from the Universidad Industrial de Santander s Medical Faculty s Anatomy Department dissection laboratory . Parametric measures were used for calculating results. Results Almost half of the evaluated plexuses had collateral variations. Subscapular nerves were the .
