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We designed the distal wrist crease abscissa 3,4 metacarpal longitudinal line gap for the ordinate palm dichotomy . Microscopic anatomy studies by 19 side fresh specimens , the application of the method of observing the median nerve , the ulnar nerve and its branches in the position of the surface projection of the coordinate system . This study proved : 1 palm Zoning Law with a concise and practical features , based on the position of the surface projection of the nerve branch point , can accurately determine the median nerve , the ulnar nerve and its branches in the course and distribution of hand ; palm median nerve , the ulnar nerve and its branches relatively constant position , but there is still a certain amount of variation ; 3 based on the measurements of nerve branch point , carpal tunnel syndrome can be designed , cubit tunnel syndrome , the median nerve recurrent branch Profiler feet reasonable incision nerve deep branch of exploratory surgery .
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