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Yergason's Test

Examination type Tendonous pathology, ligamentous integrity
Patient & Body Segment Positioning Sitting comfortably with the arm stabilized next to chest while the elbow is flexed to 900 and the forearm is pronated. 
Examiner Position The examiner should be standing in front of the patient. The examiner should have one hand placed on the volar aspect of the hand to resist the patient when moving into supination and external rotation.  The other hand should palpate the biceps tendon in the bicipital groove.
Tissues Being Tested llong head of the biceps tendon, transverse humeral ligament
Performing the Test The patient will be instructed to supinate the forearm and externally rotate the shoulder while the examiner resists the full range of motion.
Positive Test Localized pain over the bicipital groove of the humerus; palpation yields a feeling of the biceps tendon “popping out” of the bicipital with resisted motion
Interpretation Subluxation of the biceps tendon indicates that the transverse humeral ligament has been torn.  Pain during this test with no subluxation of the tendon may indicate bicipital paratendonitis or tendinosis.
Common errors in performing exam Not giving enough resistance to the patient during the full range of motNot giving enough resistance to the patient during the full range of motion; not correctly palpating the bicipital groove
Factors possibly resulting in misinterpretation Not as effective as Speed’s test because only a small part of the tendon is affected and biceps tendon pain usually occurs with motion or palpation rather than tension produced in this test.
Related tests Speed’s test
References Magee. Orthopedic Physical Assessment. 4th Ed. 2002.
Links: http://goaggies.cameron.edu/training/study21
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