Xét nghiệm này có thể được thực hiện với bệnh nhân ngồi hoặc đứng. So sánh thử nghiệm của cả hai bên là tốt nhất. Các cánh tay của bệnh nhân nên treo thoải mái với khuỷu tay gập lại 90 ° nhưng không khá chạm vào thân cây. Giám khảo đặt lòng bàn tay của mình cô trên lưng của mỗi bàn tay | Shoulder 73 Fig. 72 Lift-off test Assessment A patient with a subscapularis tear will be unable to do this. Infraspinatus Test Procedure This test may be performed with the patient seated or standing. Comparative testing of both sides is best. The patient s arms should hang relaxed with the elbows flexed 90 but not quite touching the trunk. The examiner places his or her palms on the dorsum of each of the patient s hands and then asks the patient to externally rotate both forearms against the resistance of the examiner s hands. Assessment Pain or weakness in external rotation indicates a disorder of the infraspinatus external rotator . As infraspinatus tears are usually painless weakness in rotation strongly suggests a tear in this muscle. This test can also be performed with the arm abducted 90 and flexed 30 to eliminate involvement of the deltoid in this motion. Teres Test Procedure The patient is standing and relaxed. The examiner assesses the position of the patient s hands from behind. Buckup Clinical Tests for the Musculoskeletal System 2004 Thieme All rights reserved. Usage subject to terms and conditions of license. 74 Shoulder Infraspinatus test Fig. 74a b Teres test a normal position b contracture in the right arm Assessment The teres major is an internal rotator. Where a contracture is present the palm of the affected hand will face backward compared with the contralateral hand. With the patient standing in a relaxed position such a finding suggests a contracture of the teres major. Buckup Clinical Tests for the Musculoskeletal System 2004 Thieme All rights reserved. Usage subject to terms and conditions of license. Shoulder 75 Weakness of the rotator cuff or a brachial plexus lesion can also produce an asymmetrical hand position. Nonspecific Supraspinatus Test Procedure The patient is seated with the arm abducted 90 with the examiner s hand resting on the patient s forearm. The examiner then asks the patient to further abduct the arm against the .
