What does Ober's test assess?

What does Ober's test assess?

• A. Indicates ITB laxity.
• B. Measures hip adductor strength.
• C. Measures iliotibial band length.
• D. Measures tightness of tensor fascia lata and IT band.

Answer: (D)

Ober's test checks the length and tension of the iliotibial band together with the tensor fascia lata. In the test, the patient lies on the side, the hip is extended and the knee flexed, and the examiner drops the leg from the extended position. If the IT band–TFL complex is tight, the leg will stay elevated and not drop fully toward the table; if it’s normal, the leg will drop. This makes the test most accurately described as measuring tightness of the tensor fascia lata and IT band, since these structures work as a unit and both contribute to the restriction detected. It isn’t about laxity, nor is it a direct measure of hip adductor strength, and while the IT band length is involved, the best characterization emphasizes the tightness of both the TFL and IT band.

Ober's test checks the length and tension of the iliotibial band together with the tensor fascia lata. In the test, the patient lies on the side, the hip is extended and the knee flexed, and the examiner drops the leg from the extended position. If the IT band–TFL complex is tight, the leg will stay elevated and not drop fully toward the table; if it’s normal, the leg will drop. This makes the test most accurately described as measuring tightness of the tensor fascia lata and IT band, since these structures work as a unit and both contribute to the restriction detected. It isn’t about laxity, nor is it a direct measure of hip adductor strength, and while the IT band length is involved, the best characterization emphasizes the tightness of both the TFL and IT band.