1. Patient side lying with unaffected side down (-30° from supine) and lower leg is flexed 30° to increase stability
  2. Examiner proceeds to stabilize the involved ankle in the medial rotation and applies a valgus force at the knee.

Slocum ALRI knee Test - orthopaedic test


Positive Slocum’s ALRI Test

“Clunk” or joint subluxation: Anteriolateral rotational instability

Clinical Notes

In cases of anteriolateral instability the most commonly  injured structures are; anterior cruciate ligament, posterolateral capsule, lateral collateral ligament, arcuate-popliteus complex