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Ober's test
Also known as:
Ober's abduction sign
Ober’s sign
Associated persons:
Frank Roberts Ober
Description:
A clinical test for contraction of the fascia lata in sciatica or low back pain.
Pierre Sterckx submitted this description: The patient lies on the uninvolved side with the lower knee flexed to help reduce lumbar lordosis. The examiner lifts the upper flexed or extended leg at the ankle while stabilizing the pelvis with the other hand, then abducts and extends the hip allowing the iliotibial band (ITB) to move posteriorly over the greater trochanter. The examiner then slowly lowers the upper leg. If the leg drops to the table, the test is negative; if it remains abducted, the test is positive. It is extremely important in performing this test to hold the patient's pelvis and keep it at a right angle to the table while moving the involved side.
Bibliography:
- F. R. Ober:
The role of the iliotibial band and fascia lata as a factor in the causation of low-back disabilities and diabilities and sciatica.
Journal of Bone and Joint Surgery, Boston, 1936, 18: 105-110.
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