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Roos Test

Examination type Neurological, Vascular integrity
Patient & Body Segment Positioning The patient is sitting or standing with both elbows bent to 900 of flexion and both shoulders in 900 of abduction and with full external rotation.
Examiner Position Standing or sitting in front of the patient to observe.
Tissues Being Tested Subclavian and axillary arteries and the brachial plexus
Performing the Test The patient should rapidly open and close both hands while in the position described above for 3 minutes.
Positive Test The inability to maintain the test position, diminished motor function of the hands, and /or loss of sensation in the upper extremities are positive signs/symptoms.
Interpretation A positive test is indicative of thoracic outlet syndrome, secondary to neurovascular compromise.  This test evaluates both neural and vascular structures and is considered to be the most accurate clinical test for assessing thoracic outlet syndrome.
Common errors in performing exam Do not test for more than 3 minutes.  Discontinue the test if positive signs or symptoms are observed before the 3 minutes are up.
Factors possibly resulting in misinterpretation Underlying shoulder or elbow pathology may make this test difficult to perform.  The hands may become cold, but this is not necessarily due to injury.
Related tests Wright test/maneuver, Costoclavicular Syndrome test, Provocative elevation test, Adson Maneuver, Halstead maneuver
References Magee, David J. (2002). Orthopedic Physical Assessment. Philadelphia, PA: Elsevier
Links:

http://www.sugical-tutir.org 

http://www.itnaca.edu 
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