Varus Stress (Elbow) at 900 |
Examination type |
Joint
stability, ligamentous laxity |
Patient & Body Segment Positioning |
The patient is
sitting upright, with elbow flexed (90 degrees). Patient does
not resist or assist any movement. It is also recommended that
the humerus be in full medial rotation. |
Examiner Position |
The examiner
should face the patient while standing on the side of the
affected elbow with one hand cupping the elbow (heel of hand on
medial side of elbow with fingers on lateral side) for support
while the other hand is placed at the patient’s wrist to provide
force. |
Tissues
Being Tested |
Lateral
collateral ligament |
Performing the Test |
Cup the
posterior aspect of the patients elbow in one hand and hold the
patients wrist in the other. The hand on the elbow will act as
a fulcrum around which the examiner’s other hand will apply
force. With the elbow extended to 90 degrees, force the forearm
medially which will place stress on the lateral side of the
elbow. |
Positive Test |
Lack of a firm
end feel or extra joint opening as compared bilaterally |
Interpretation |
Possible
sprain (stretching or even tear) of the lateral collateral
ligament |
Common errors in
performing exam |
Not enough
pressure applied to the wrist to observe opening at the elbow |
Factors possibly
resulting in misinterpretation |
Pre-existing
joint hyper-mobility |
Related tests |
Varus stress
test at 300 |
References |
Magee, David
J. (2002). Orthopedic Physical Assessment. Philadelphia,
PA: Elsevier |
Links: |
http://www.aafp.org/afp/20000201/691.html |
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