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Slocums Test

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Other Names

  • Slocum ALRI Knee Test
  • Slocum's Test


Illustration of Slocum's Test[1]
  • Evaluate the Knee Joint for Anteromedial Rotary Instability (AMRI) and Anterolateral Rotary Instability (ALRI)
  • Anterolateral Anatomy
    • Anterior Cruciate Ligament
    • Posterior cruciate Ligament
    • Posterolateral Capsule
    • arcuate – popliteus Complex
    • Lateral Collateral Ligament
    • Iliotibial Band
  • Anteromedial Anatomy
    • Anterior Cruciate Ligament
    • Medial Collateral Ligament
    • Posterior Oblique Ligament
    • Posteromedial Capsule


  • The patient is supine, knee flexed to 90°, foot fixed on the examination table
  • Anterolateral instability evaluation:
    • The foot is rotated internally by 30°
    • The examiner pulls on the tibia with anterior translation
    • Positive test: Increased translation or excessive movement compared to unaffected limb
  • Anteromedial instability evaluation:
    • Foot is rotated 15-30° laterally
    • Examiner pulls on the tibia with anterior translation
    • Positive test: excessive translation or movement compared to unaffected limb


  • Anteromedial Rotary Instability (AMRI)
  • Anterolateral Rotary Instability (ALRI)


  • Unknown

See Also


  1. Image courtesy of https://mobilephysiotherapyclinic.in/, "Slocum's Test
Created by:
John Kiel on 11 August 2019 21:23:57
Last edited:
21 May 2023 17:28:23