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December 1963

A Study of Femoral Nerve Conduction TimeAn Aid in Differentiating Neuritis of the Femoral Nerve From Other Causes of Proximal Neurogenic and Muscular Disease

Author Affiliations

From the department of Clinical Neurophysiology, University Hospital.

Arch Neurol. 1963;9(6):607-614. doi:10.1001/archneur.1963.00460120057006

Introduction  The etiological spectrum of disease affecting the quadriceps femoris muscle includes the myopathies (dystrophic, myositic, and acquired), neurogenic affections (anterior horn cell or nerve), and possibly a combination of neurogenic and muscular disease. The diagnosis is important because of the high frequency of involvement of the quadriceps femoris in the primary diseases of muscle, the occasional presentation of quadriceps muscle weakness as an early sign of an endocrine or metabolic disturbance or of disease of the anterior horn cells, and the frequently unrecognized involvement of the femoral nerve in a mononeuritis or as part of polyneuritis.Muscle biopsy and routine electromyography may be of considerable aid in differentiating primary diseases of muscle from the neurogenic diseases but are less helpful in specific differentiation, and are by no means infallible.This paper describes a test of femoral nerve conduction which is helpful in the diagnosis of proximal neurogenic and muscular

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