Elbow Assessment

Scratch Collapse Test | Cubital Tunnel Syndrome Assessment

Check our shop
Scratch Collapse Test

Scratch Collapse Test | Cubital Tunnel Syndrome Assessment

Cubital tunnel syndrome is a peripheral entrapment neuropathy of the ulnar nerve at the elbow. It’s the second most common entrapment neuropathy of the upper limb and is commonly seen after trauma resulting in a fracture or dislocation at the elbow, arthritis, or repetitive strain.

Cheng et al. (2008) proposed a new clinical test to evaluate the patient with suspected ulnar nerve entrapment. Their study showed a sensitivity of 69% and specificity of 99% though the study is at a high risk of bias and the test has not undergone further validation which is why we give it a moderate clinical value at best.

To conduct the test, the patient is in standing or sitting position with the arms in the anatomical position, the elbows flexed to 90 degrees and the hands outstretched.

You will then apply an internal rotation force at the distal forearm and ask the patient to resist. Instruct the patient to only match the force applied by you and not try to push as hard as they can.

Then scratch or swipe with the fingertips over the ulnar nerve at the elbow and immediately repeat the first step of resisted bilateral external rotation.

The test is considered positive if you can observe a brief loss of the patient’s external rotation force. The authors believe that the scratch collapse test uses the phenomenon of the cutaneous silent period to briefly inhibit tonic shoulder external rotation as a response to a noxious stimulus of the skin overlying a chronically constricted nerve.

21 OF THE MOST USEFUL ORTHOPAEDIC TESTS IN CLINICAL PRACTICE

Physiotutors Free Assessment E-book

Other orthopedic tests to assess for cubital tunnel syndrome are:

 

 

References

Cheng, C. J., Mackinnon-Patterson, B., Beck, J. L., & Mackinnon, S. E. (2008). Scratch collapse test for evaluation of carpal and cubital tunnel syndrome. The Journal of hand surgery, 33(9), 1518-1524.

LIKE WHAT YOU’RE LEARNING?

BUY THE FULL PHYSIOTUTORS ASSESSMENT BOOK

  • 600+ Pages e-Book
  • Interactive Content (Direct Video Demonstration, PubMed articles)
  • Statistical Values for all Special Tests from the latest research
  • Clinical Value Recommendation
  • Detailed descriptions & searchable
  • Currently on Version 5.0 – Free lifetime updates
  • Available in 🇬🇧 🇩🇪 🇫🇷 🇪🇸 🇮🇹 🇵🇹 🇹🇷
  • And much more!
E-Book

ALL ORTHOPEDIC TESTS IN ONE PLACE

SEE ALL PRODUCTS
Assessment app banner
Assessment E-book
Reviews

What customers have to say about the Assessment E-Book

Wait before you go!LEARN TO TREAT THE MOST COMMON CAUSE OF VERTIGO

In this FREE video series by 
Vestibular Rehab Specialist
FIRAT KESGIN