Scratch Collapse Test: Difference between revisions
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'''Step 4.''' Positive test indicates quick loss of external rotation resistance on the affected side. | '''Step 4.''' Positive test indicates quick loss of external rotation resistance on the affected side. | ||
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<div class="col-md-6"> {{#ev:youtube|mF3bUpeQfzs|300}} <div class="text-right"><ref>Elbow Flexion Test for Cubital Tunnel Syndrome. Ccedseminars. Available from: https://youtu.be|mF3bUpeQfzs </ref></div></div> | |||
<div class="col-md-6"> {{#ev:youtube|PTpUzXdBvpo|300}} <div class="text-right"><ref>Ulnar Nerve, Clinical Examination - Everything You Need To Know - Dr. Nabil Ebraheim. nabil ebraheim. Available from: https://youtube|PTpUzXdBvpo </ref></div></div> | |||
=== Evidence === | === Evidence === | ||
Revision as of 17:54, 7 September 2021
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 ( compression area) on affected elbow, then immediately repeat above step 2.
Step 4. Positive test indicates quick loss of external rotation resistance on the affected side.
Evidence[edit | edit source]
| carpal tunnel syndrome | cubital tunnel syndrome |
|---|---|
| sensitivity 64%[3]31%[4]32%[5] | sensitivity 69%[3] |
| Specificity 99%[3] 61%[4] | Specificity 99%[3] |
| Positive Predictive Value 99%[3] | Positive Predictive Value 99%[3] |
| Negative Predictive Value 73%[3][3] | Negative Predictive Value 86%[3] |
| Accuracy 82%[3] | Accuracy 89%[3][3] |
References[edit | edit source]
- ↑ Elbow Flexion Test for Cubital Tunnel Syndrome. Ccedseminars. Available from: https://youtu.be%7CmF3bUpeQfzs
- ↑ Ulnar Nerve, Clinical Examination - Everything You Need To Know - Dr. Nabil Ebraheim. nabil ebraheim. Available from: https://youtube%7CPTpUzXdBvpo
- ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 Cheng CJ, Mackinnon-Patterson B, Beck JL, Mackinnon SE. Scratch collapse test for evaluation of carpal and cubital tunnel syndrome. J Hand Surg Am. 2008 Nov;33(9):1518-24. doi: 10.1016/j.jhsa.2008.05.022. PMID: 18984333.
- ↑ 4.0 4.1 1. Makanji HS, Becker SJE, Mudgal CS, Jupiter JB, Ring D. Evaluation of the scratch collapse test for the diagnosis of carpal tunnel syndrome. Journal of Hand Surgery (European Volume). 2014;39(2):181-186. doi:10.1177/1753193413497191
- ↑ Blok RD, Becker SJ, Ring DC. Diagnosis of carpal tunnel syndrome: interobserver reliability of the blinded scratch-collapse test. J Hand Microsurg. 2014;6(1):5-7. doi:10.1007/s12593-013-0105-3
