title: [Involvement of motor fibers in the ulnar nerve syndrome at the elbow].
abstract: In order to improve the diagnosis of the ulnar nerve neuropathy at the elbow, we have retrospectively analysed the data obtained in the course of the electrophysiological examinations of the ulnar nerve motor component in three groups of adult subjects of both sexes (210 control subjects; 111 patients with more or less marked clinical symptoms suggestive of ulnar nerve neuropathy; 21 patients who after our investigation have undergone an operation for an ulnar nerve neuropathy at the elbow). The comparison of the data obtained in the three groups permits us to propose the following parameters as signs of ulnar neuropathy at the elbow: the proximal conduction time (stimulation in the axilla) greater than or equal to 12 msec for males and greater than or equal to 11 msec for females; motor conduction velocity of ulnar motor nerve fibers at the arm comprise in the range of normal values and similar to that measured on the contralateral ulnar nerve; conduction velocity of ulnar nerve motor fibers when it is measured on all the length of the upper limb less than 45 m/sec-1 (males) or less than 50 m/sec-1 (females).
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004550:Elbow; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009046:Motor Neurons; D009431:Neural Conduction; D010523:Peripheral Nervous System Diseases / Q000175:diagnosis / Q000601:surgery; D012737:Sex Factors; D013577:Syndrome; D014459:Ulnar Nerve
vernacular_title: L'atteinte des fibres motrices dans le syndrome du nerf cubital au coude.