EDEN TEST FOR THORACIC OUTLET SYNDROME (TOS) - SUBCORACOID ENTRAPMENT This test puts stress on the subcoracoid space, which is why this test is also known as the Costoclavicular Syndrome or Military Brace test. If you want to learn more about the anatomy of nerve entrapement in the upper quarter and possible sites where peripheral nerve entrapment might occur, we can recommend you to read the article by Pratt et al. (2005) in the comments below! | Physiotutors

EDEN/MILITARY BRACE TEST FOR THORACIC OUTLET SYNDROME (TOS) - SUBCORACOID ENTRAPMENT This test compresses the neurovascular bundle in the costoclavicular space, which is referred to as costoclavicular syndrome. No diagnostic accuracy studies have been conducted reporting sensitivity or specificity values, which is why its clinical value remains questionable. Some authors mention that additional narrowing of the costoclavicular space can be reached if the patient is asked to hold his breath after