Scratch Collapse Test
Purpose[edit | edit source]
Scratch Collapse Test is a diagnostic test for carpal tunnel syndrome and cubital tunnel syndrome.
Technique[edit | edit source]
Step 1. Patient position in standing or sitting.
Step 2. Ask the patient to flex the elbow 90 degree, then examiner applies internal rotation force over the distal arm while asking patient to resist.
Step 3. While in above position examiner applies scratch over the ulnar nerve on affected elbow, then immediately repeat above step.
Step 4. Positive test indicates quick loss of external rotation resistance on the affected side.
