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JAMA· 1967

The Lasègue Test

Jesse N. Borden

Short summary

The Lasègue test, commonly used for low back impairments, involves two distinct maneuvers: passive straight-leg raising to elicit pain, followed by a knee-flexed leg raise that should not produce pain, indicating a positive sign.

AI-generated from the title and abstract; the full text is not read.

Key points

  • The Lasègue test is used for patients with low back impairments.
  • It involves two distinct maneuvers: passive straight-leg raising and a knee-flexed leg raise.
  • A positive Lasègue sign requires pain reproduction during straight-leg raising.
  • The knee-flexed leg raise should be performed without pain to confirm a positive sign.

AI-generated from the title and abstract; the full text is not read.

Abstract

To the Editor:— As orthopedic consultant to a disability-evaluation agency, I analyze medical reports from physicians, specialists, and generalists throughout the country. The Lasegue test is commonly used in the physical examination of patients with low back impairments. It is evident that the method of performance of this diagnostic maneuver varies with the physician. Reference to the original literature revealed the following facts. The Lasegue test consists of two maneuvers. First, a passive straight-leg-raising test is carried out (Fig 1). Then as the second, and verification maneuver, the leg is again raised (jack-knifed) but with the knee flexed (Fig 2). Whereas the first maneuver will produce back and/or leg pain in the presence of low back pathology, the second maneuver can be carried out without the production of pain. A positive Lasegue sign therefore consists of (1) the production of an anatomically proper pain on straight-leg raising and (2) absence

The authors' abstract, as published at the source. JAMA, 1967 · DOI ↗

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Field: Pharmacology (Medicine)

PharmacologyMedicine