External Rotation Recurvatum
Test |
Examination type |
ligamentous and joint instability |
Patient & Body Segment Positioning |
Patient lies
supine and relaxed on exam table |
Examiner Position |
Examiner holds
the both big toes in their hands. |
Tissues
Being Tested |
PCL, LCL and
other posteriorlateral knee structures. |
Performing the Test |
The great toe is
lifted up so that knees come up off of the table. The
examiner looks for the amount of recurvatum (hyperextension),
varus, and tibial external rotation of the knee. The test
should be done bilaterally at the same time to see if
hyperextension and rotary instability is the normal pattern for
the patient. |
Positive Test |
The amount of
hyperextension, varus, and tibial external rotation of the
injured knee must be unequal on for on leg to another. If a
difference is noted when comparing bilaterally then this
indicates a positive test. |
Interpretation |
Indicates
posterolateral rotary instability. |
Common errors in
performing exam |
Incorrect hand placement. Not comparing
bilaterally to see if this is amount of hyperextension is normal
for that person. |
Factors possibly
resulting in misinterpretation |
Tight or
spasming hamstrings, gastrocnemius, and soleus muscles,
ligamentous laxity in ankle. |
Related tests |
Posterolateral drawer tests |
References |
Muché. Julie
A. Posterior knee pain and its causes. Physicians and Sport
Medicine Journal. Vol. 32. No. 3. March 2004. http://www.physsportsmed.com/issues/2004/0304/muche.htm |
Links: |
http://www.sportsdoc.umn.edu/Clinical_Folder/Knee_Folder/Knee_
Exam/ext%20rotation%20recurvatum.htm |
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