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Related Experiment Video

Updated: Feb 1, 2026

A Cost Effective and Adaptable Scratch Migration Assay
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Important Details in Performing and Interpreting the Scratch Collapse Test.

Lorna C Kahn1,2, Andrew Yee1,2, Susan E Mackinnon1,2

  • 1Saint Louis, Mo.

Plastic and Reconstructive Surgery
|October 17, 2017
PubMed
Summary

The scratch collapse test aids in diagnosing peripheral nerve issues like carpal tunnel syndrome. This guide improves its accuracy and reliability for challenging cases.

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Area of Science:

  • Neurology
  • Diagnostic procedures
  • Nerve injuries

Background:

  • The scratch collapse test is valuable for diagnosing peripheral nerve conditions.
  • It is particularly useful when nerve irritation or injury localization is unclear.
  • Its accuracy may depend on examiner experience.

Purpose of the Study:

  • To provide a clear outline of the scratch collapse test procedure.
  • To enhance interrater reliability in performing the test.
  • To describe test nuances, limitations, and clinical applications.

Main Methods:

  • Detailed description of all stages of the scratch collapse test.
  • Inclusion of specific clinical scenarios where the test is beneficial.
  • Provision of accompanying video content for performance and interpretation guidance.

Main Results:

  • The article offers a structured approach to improve test performance and interpretation.
  • It clarifies inappropriate use cases for the scratch collapse test.
  • Four clinical scenarios demonstrating test utility are presented.

Conclusions:

  • Standardizing the scratch collapse test procedure can improve diagnostic accuracy.
  • Understanding test nuances and limitations is crucial for effective application.
  • This guide aims to enhance the utility of the scratch collapse test in clinical practice.