Anterolateral rotatory instability is an excessive internal rotation of the tibia on the femur when the knee is bent, leading to excessive opening of the joint at the outer (lateral ) side.


Editor's interpretation of a paper published in the medical literature.

Multiligament instability of the knee

An overview of the types of multiligament instability seen in the knee.

An interpretation of a published medical article on the posteromedial corner of the knee.

An 'interpretation' of a paper published in 2000 that explains the anatomical basis of certain multi-ligament injuries of the knee.



The Anterolateral Ligament is Not the Whole Story: Reconsidering the Form and Function of the Anterolateral Knee and its Contribution to Rotatory Knee Instability. Sheean AJ, Shin J, Patel NK, Lian J, Guenther D and Musahl V. Tech Orthop. 2018 Dec; 33(4): 219–224.

See also -

The test for anterolateral rotatory instability is also called the 'Slocum Test'. Here is a video showing the Slocum test and embedded courtesy of 'HDAllDay21' -