Knee A to Z

The anterolateral corner (ALC) is that region on the outer side of the front of the knee. Page updated July 2024 by Dr Sheila Strover (Clinical Editor)

The anterolateral ligament (ALL) is a ligamentous thickening of the capsular ligament on the outer side of the knee, in front of the lateral collateral ligament. Page updated July 2024 by Dr Sheila Strover (Clinical Editor)

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. Page updated July 2024 by Dr Sheila Strover (Clinical Editor)

Anteromedial rotatory instability is an abnormal and excessive movement of the inner side of the tibia in relation to the femur when weight is taken on the knee, with the joint opening up more than it should. Page updated July 2024 by Dr Sheila Strover (Clinical Editor)

Anteversion is an abnormal forwards angulation of a bone; the term is usually used in relation to the femur. Page updated July 2024 by Dr Sheila Strover (Clinical Editor)

An anti-inflammatory is a substance that decreases inflammation. Page updated July 2024 by Dr Sheila Strover (Clinical Editor)

Abbreviation for 'American Orthopaedic Society for Sports Medicine'.

Apley's test - also called the Apley Grind Test - is a clinical examination to try to identify possible damage to the meniscus. Page updated May 2024 by Dr Sheila Strover (Clinical Editor)

An aponeurosis is a fibrous sheet-like expansion of a tendon, for example of the biceps femoris or quadriceps muscles.

Apoptosis is the death of cells which occurs as a normal and controlled part of an organism's growth or development.