Fulcrum Test |
Examination type |
Joint
Instability |
Patient & Body Segment Positioning |
Lying supine
on the examination table. Involved shoulder should be abducted
to 900 and externally rotated with the elbow flexed
to 900. |
Examiner Position |
The examiner
should be standing next to the patient on the involved side.
Make a fist with one hand and place it under the patients
humerus to act as a fulcrum while placing the other hand at the
athlete’s elbow in order to apply force. |
Tissues
Being Tested |
Anterior
ligaments of the shoulder, rotator cuff muscles, labrum, and the
head of the humerus |
Performing the Test |
Using the
fist under the humerus as a fulcrum, apply a downward force on
the elbow with one hand and use the fist to apply a mild
anterior directed force to the posterior humeral head. This
will cause the humeral head to translate anteriorly. |
Positive Test |
A positive
test is indicated if the patient shows apprehension, indicates
pain with translation, or if alarm shows on the patients face.
If the patient has previously dislocated or had a subluxation he
may describe the pain as similar to experiencing this injury. |
Interpretation |
Pain or
apprehension indicate anterior instability |
Common errors in
performing exam |
Application
of pressure on wrong spot. Examiner has wrong positioning.
Patient does not comply fully with examiners instructions.
Patient is in wrong position. |
Factors possibly
resulting in misinterpretation |
Improper
hand positioning can easily mislead the examiner while he or she
is performing the test. The test should be performed very
slowly. If it is performed rapidly the glenohumeral joint may
dislocate from its joint capsule causing further pain and injury
to the patient. Not performing a bilateral comparison on the
non-injured joint could also mislead the examiner in his
interpretation of the injury. |
Related tests |
Anterior apprehension test (Crank Test),
Relocation Test (Fowler Test or Jobe Relocation Test), Rockwood
Test, Rowe Test, Prone Anterior Instability Test, Andrews’
Anterior Instability Test, and the Anterior Drawer Test for the
shoulder |
References |
Booker, James M
& Tibideau, Gary (2000) Athletic Injury Assessment (4th
ed). ST. Louis McGraw Hill. Pg.
Magee, David
(2002) Orthopedic Physical Assessment Philadelphia
Saunders. |
Links: |
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www.nwtsportsmed.com
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