Cross-Arm Test |
Other Names |
Horizontal Adduction
Test, Acromioclavicular Crossover Test, Cross-Chest Test,
Crossbody Test |
Examination type |
Bony
integrity, ligamentous integrity |
Patient & Body Segment Positioning |
Supine or
standing relaxed with arms at sides. |
Examiner Position |
Standing
next to the patient on the involved side. One hand should be
placed at the shoulder to stabilize while the other hand is
placed on the patient’s elbow to move the arm. |
Tissues
Being Tested |
Acromioclavicular joint, acromion process, proximal end of
clavicle, ligamentous structures of the acromioclavicular joint |
Performing the Test |
The examiner
passively moves the humerus across the chest by flexing the
shoulder to 900 and then horizontally adducting the
shoulder. As the humerus approaches full horizontal adduction,
question the patient regarding pain in the acromioclavicular
joint. Lightly place the fingers of your other hand over the
acromioclavicular joint to palpate for crepitus and separation.
Perform this test on the uninvolved shoulder and compare
bilaterally. |
Positive Test |
Pain,
crepitus, or separation at the acromioclavicular joint |
Interpretation |
The presence
of pain indicates pathology of the acromioclavicular joint. This
procedure compresses or impinges the acromioclavicular joint and
is painful if internal derangement or instability exists. |
Common errors in
performing exam |
Failing to
compare bilaterally; not palpating for separation during the
test |
Factors possibly
resulting in misinterpretation |
Be sure to
question the patient about the exact location of the pain as
this movement stresses structures other than the
acromioclavicular joint as well. |
Related tests |
Acromioclavicular shear test |
References |
Magee, David
J. (2002). Orthopedic Physical Assessment. Philadelphia,
PA: Elsevier. |
Links: |
http://www.nismat.org/orthocor/exam/shoulder.html,
http://goaggies.cameron.edu/training/study21 |
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