Anterior Instability Test |
Other Names |
Leffert’s
Test |
Examination type |
Joint
stability |
Patient & Body Segment Positioning |
The patient
will need to be seated and relaxed during the test. |
Examiner Position |
During the
test the examiner will be standing behind the shoulder of the
patient to be tested. The examiner will place one hand over the
shoulder so that the index finger is over the anterior humeral
head and middle finger is over the coracoid with the thumb over
the posterior humeral head. The examiner will use the other hand
to grasp the patient's wrist. |
Performing the Test |
The examiner
will use the hand to grasping the patient’s wrist to abduct and
externally rotate the involved shoulder. The examiner should
use the other hand to palpate for any translation of the humeral
throughout the test. Observe the fingers resting on the humeral
head for movement forward during the test and for return to
starting position after the test as the humeral head slides back
into place. |
Tissues
Being Tested |
Glenohumeral
joint ligaments, anterior deltoid and rotator cuff muscles |
Positive Test |
Observing or
palpating the humeral head moving forward and returning to the
starting position. |
Interpretation |
Anterior
shoulder instability |
Common errors in
performing exam |
Improper
patient positioning, examiner positioning, or hand placement are
common errors. Also, improper movement of the shoulder during
the test is a common error. |
Factors possibly
resulting in misinterpretation |
Pre-existing
joint hyper-mobility |
Related tests |
Anterior
Translation Test, Relocation Test, Apprehension Test, Rockwood,
Prone anterior instability. |
References |
Magee, David
J. (2002). Orthopedic Physical Assessment. Philadelphia,
PA: Elsevier |
Links: |
http://www.wheelessonline.com/ortho/physical_exam_for_anterior_instability
http://www.fpnotebook.com/ORT121.htm |
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