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Glossary Investigation

Scratch collapse test

Polski: Test scratch collapse Czytaj po polsku →

Also known as scratch collapse test SCT

A provocative test described by Cheng and Mackinnon in 2008 in which scratching skin over a compressed nerve produces transient loss of resisted shoulder external rotation. Original sensitivity ~64% has not been replicated under blinded conditions; not recommended as a sole diagnostic test.

Articles mentioning this term

  1. FESSH preparation

    Clinical examination of the hand and wrist

    Hand and wrist examination for FESSH candidates: how accurate the Phalen, Tinel, scratch collapse, Elson, Watson, grind, fovea and Allen tests really are.

  2. FESSH preparation

    Carpal tunnel syndrome

    Expert review of carpal tunnel syndrome for FESSH candidates and consultant peers — anatomy, diagnosis, AAOS 2024 guideline, surgical controversies, recurrent CTS workup. Vancouver-cited.

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