한국인 위팔근에 분포하는 노신경 근육가지

Abstract

Most textbook" describe the brachialis muscle is innervated by the musculocutaneous and radial neives This study was performed to clarify the incidence and morphology of the branch of the radial nerve to the brachlalis muscle Eighty sides of 40 adult Korean cadavers were used in this study The incidence of the radial nerve to the brachialis muscle was 75% of 80 sides and the radial nerve was innervated bilaterally 10.65% (26 sides) The number of the branch arising from the radial nerve was one (65%), two (31.7%) or three (3.3%) The average distance from the lateral epicondyle to the branch arising from the radial nerve was 68.5 mm (range 4~126 mm) The brachialis muscle recelved a branch from radial nerve through a descending branch (58.5%) a transverse branch (26.8%) or an ascending branch (14.6%) A branch of the radial nerve was usually divided into one or two branches (79.3%) before piecing the brachialis muscle The average distance from the lateral epicondyle to the perforating point of the branch was 52.4 mm (range 3~123 mm) The branch of the radial nerve penetrated inferior and middle third of the brachialis muscle in 44.2% and 53.2% respectively