Cyriax Release Test

Published July 2, 2026 Read time 1 min read Readers 3
Cyriax Release Test

What is the “Cyriax Release Test” used for?

  • Thoracic Outlet Syndrome 

How to perform the “Cyriax Release Test”?

  • The patient is sitting with elbows flexed. 
  • The examiner stands behind the patient and grasps under the patient’s forearms while the patient’s forearms, wrists, and hands are in neutral 
  • The examiner then leans the patient’s trunk backward approximately 15° and lifts the patient’s shoulder girdle to end range holding the position for 3 minutes.

What is the positive result?

  • The production of symptoms or the disappearance of neurological signs (release phenomenon) indicates a positive test.

References & More

  1. Gilbert, Kerry & Isom, Krista & Hall, Rachel & Leathers, Bret & Sheppard, Nathan & Sawyer, Steven & Sizer, Phillip. (2004). Rate of False Positive Using the Cyriax Release Test for Thoracic Outlet Syndrome in an Asymptomatic Population. Journal of Manual & Manipulative Therapy. 12. 73-81. 10.1179/106698104790825374. ResearchGate
  2. Cyriax Release Test – Orthofixar