Thoracic outlet syndrome

special test
1) Adson (ADD son) - Initially the patient is in a seated position. The therapist has the patient extend their neck and turn their head to the side that is being tested. The patient then holds their breath and the radial pulse is palpated. The test is positive if there is a marked decrease, or disappearance, of the radial pulse.
It is a test accompanied by compression of the Subclavian artery by a cervical rib or tightened anterior and middle scalene muscles.

2) Allen's test - Have the patient abduct the shoulder to 90 degrees with elbows flexed to 90 degrees as well.. and have him externally rotate the shoulder. Then have him//her to turn his/her head to the unaffected side and palpate the radial pulse．This test is accompanied by the compression of the subclavian artery between the clavicle and the 1st rib．

3) Eden's test // costoclavicular test // military brace test - Patient is standing. The examiner palpates the radial pulse and then draws the patient's shoulder down and back as the patient lifts their chest in an exaggerated "at attention" posture. A positive test is indicated by an absence or decrease in the vigor of the pulse and implies possible costoclavicular syndrome. It is also positive if the client experiences an increase of neurologic symptoms into the upper extremity on that side.

4) Wright's Test - The patient's arm is passively brought into abduction and external rotation to 90 without tilting the head. The elbow is flexed to 90 degrees and then the radial pulse is palpated．
It is also accompanied by the tightness of the pectoralis minor muscle.