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Published on: August 11, 2016
Evaluation of the scratch collapse test in peroneal nerve compression
Justin Gillenwater1, Jonathan Cheng, Susan E Mackinnon
1Los Angeles, Calif.; Dallas, Texas; and St. Louis, Mo. From the Division of Plastic and Reconstructive Surgery, University of Southern California; Department of Plastic Surgery, University of Texas Southwestern Medical Center; Division of Plastic and Reconstructive Surgery, Washington University in St. Louis.
The scratch collapse test is a sensitive and specific diagnostic tool for common peroneal neuropathy. This test shows high accuracy, aiding in diagnosing peripheral nerve compression effectively.
Area of Science:
- Neurology
- Orthopedics
- Diagnostic Medicine
Background:
- The scratch collapse test is a novel provocative diagnostic method for peripheral nerve compression.
- Peripheral nerve compression, particularly of the common peroneal nerve, can significantly impact patient mobility and quality of life.
Purpose of the Study:
- To prospectively evaluate the diagnostic accuracy of the scratch collapse test.
- To compare the scratch collapse test with Tinel's sign for diagnosing common peroneal nerve compression neuropathy.
Main Methods:
- Prospective study of 24 consecutive patients diagnosed with common peroneal nerve compression neuropathy.
- Diagnosis confirmed via history, physical examination, and electrodiagnostic testing.
- Provocative testing included the scratch collapse test and Tinel's sign.
Main Results:
- The scratch collapse test demonstrated a sensitivity of 0.77 and a specificity of 0.99.
- Tinel's sign showed a sensitivity of 0.65 and a specificity of 0.99.
- The scratch collapse test exhibited superior sensitivity compared to Tinel's sign.
Conclusions:
- The scratch collapse test is a highly sensitive and specific provocative test for diagnosing common peroneal neuropathy.
- It compares favorably to existing clinical diagnostic tests.
- This test aids clinicians in the accurate diagnosis of peripheral nerve compression.
