The purpose of the work was to evaluate the role and potentialities of complex diagnosis in surgical treatment of peripheral nerve trunk injuries of the extremities. Complex examination including electroneuromyography, ultrasonography and contrast neurography was performed in 109 patients with injuries of peripheral nerves of the extremities. Examination results enabled to elaborate the algorithm of diagnosis and differential surgical treatment tactics for surgical treatment of peripheral nerves injuries. Management of patients in accordance with proposed algorithm allowed to improve surgical treatment results significantly - by 21%.