Sit up Test |
Examination type |
Sacroiliac Joint
|
Patient & Body Segment Positioning |
Patient lies
supine with body straight and legs symmetric
|
Examiner Position |
Standing to
the side of the patient |
Tissues
Being Tested |
Sacroiliac
Joint |
Performing the Test |
Actively
flex knees, lift pelvis off table about 4 inches, then drop
pelvis to table. Passively extend knees and lower legs one at a
time to table. Then roll the legs medially and release. Palpate
and observe level of medial malleoli, then athlete sits up and
malleoli are rechecked. |
Positive Test |
If one
SI joint is hypomobile and blocked in posterior rotation, the
sacrum and ilium will move together as a unit, making the leg
appear longer when sitting up compared to it appearing shorter
in supine. If one SI joint is in anterior rotation that leg may
appear longer or same length when supine, but get shorter when
sitting up. |
Interpretation |
|
Common errors in
performing exam |
Knees are not extended one at a time, patient is not instructed
to drop pelvis to table. |
Factors possibly
resulting in misinterpretation |
Miscommunication
between patient and examiner. |
Related tests |
|
References |
Orthopedic
Physical Assessment. 4th Ed.
Special Test
for Orthopedic Examination, 2nd Ed. |
Links: |
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MOUSE OVER PICTURE
TO VIEW MOVIE |
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