Knee Assessment

Giving Way Test | Anterolateral Rotatory Instability

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Giving Way Test

Giving Way Test | Anterolateral Rotatory Instability

Jakob et al. (1981) proposed their test in order to reproduce anterior subluxation of the lateral tibial plateau with the patient in standing position. This position may be able to elicit the feeling of giving way of the knee more easily in muscular patients or those with active muscle guarding compared to a non-weightbearing test. However, this test variation has not been compared to a reference test so no diagnostic values are available and the clinical value remains questionable.

To conduct the test, the patient is standing and with his unaffected side leaning against the wall or the treatment table but is asked to distribute his weight equally on both feet.

Place your hands above and below the knee joint and apply a valgus force to the knee and move it into flexion.

In a positive test, the valgus force and flexion of the knee will elicit a jerk and the knee will give way. The patient may report this as the feeling of instability they experience.

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Other common tests to assess for rotatory instability of the knee are:

 

References

Jakob, R. P., Hassler, H., & Staeubli, H. U. (1981). Observations on rotatory instability of the lateral compartment of the knee: experimental studies on the functional anatomy and the pathomechanism of the true and the reversed pivot shift sign. Acta Orthopaedica Scandinavica, 52(sup191), 1-34.

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