O'brien Test |
Examination type |
Joint instability, cartilage integrity |
Patient & Body Segment Positioning |
Patient
standing with elbow fully extended with shoulder flexed 90
degrees, adducted 10-15 degrees, and internally rotated so that
the thumb faces downward (forearm in pronation) |
Examiner Position |
Standing
behind or beside patient with one hand stabilizing the affected
shoulder and the other hand placed on the extended arm to apply
force |
Performing the Test |
Examiner
applies eccentric force to flexed, adducted and pronated arm
while patient tries to elevate arm. Procedure is performed a
second time with the forearm in supination. |
Tissues
Being Tested |
Superior Labrum |
Positive Test |
Pain
elicited during first part of test with arm pronated but pain
relieved or decreased during second maneuver with arm supinated |
Interpretation |
May indicate
a SLAP lesion (superior labral tear from anterior-posterior)
|
Common errors in
performing exam |
Incorrect
hand placement of examiner |
Factors possibly
resulting in misinterpretation |
Other shoulder conditions such as impingement or
rotator cuff tears |
Related tests |
Crank Test,
Anterior slide test, Biceps Load Test, Biceps Tension Test,
Labral Crank Test |
References |
Magee.
Orthopedic Physical Assessment. 4th Ed. 2002.
http://ajs.sagepub.com/cgi/content/abstract/30/6/806
|
Links: |
http://ajs.sagepub.com/cgi/content/abstract/30/6/806
|
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