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Related Concept Videos

Introduction to the Sign Test01:10

Introduction to the Sign Test

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Image Acquisition using Portable Sonography for Emergency Airway Management
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[A forgotten eponym: the Mackiewicz sign].

Avi Ohry1

  • 1Rehabilitation Medicine, Sackler Faculty of Medicine, Tel Aviv University Department of Rehabilitation Medicine, Reuth Medical Center Tel Aviv, Israel. aohry@post.tau.ac.il

Harefuah
|August 2, 2011
PubMed
Summary
This summary is machine-generated.

The cruralis phenomenon, described by Dr. Mackiewicz, is a clinical sign indicating femoral nerve or L4 root injury. This maneuver elicits thigh and groin pain, aiding in diagnosing nerve damage.

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Area of Science:

  • Neurology
  • Clinical Diagnostics

Context:

  • The femoral nerve and L4 nerve root are crucial for lower limb function.
  • Accurate diagnosis of nerve injuries is essential for effective treatment.
  • Clinical signs provide valuable diagnostic information.

Purpose:

  • To describe the diagnostic maneuver for femoral nerve or L4 root injury.
  • To introduce the "cruralis phenomenon" as a specific clinical sign.
  • To facilitate the recognition of this sign in clinical practice.

Summary:

  • The cruralis phenomenon involves a specific maneuver performed on a prone patient.
  • The maneuver elicits pain in the anterior thigh and groin, suggesting femoral nerve or L4 root pathology.
  • First described by neurologist Jacob Mackiewicz in 1913.

Impact:

  • Enhances diagnostic capabilities for femoral nerve and L4 root injuries.
  • Provides clinicians with a specific, reproducible diagnostic test.
  • Contributes to the understanding and documentation of neurological examination findings.