Welcome to Classifications and Online Calculators in Radiology

This site was build along with the Atlas of Radiology Images to support your knowledge in radiology.

You will find here:

that are used in radiology and related fields with free access.


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The concept of this website is based on a previous site that was founded in 2008 and is still up and running. The website is composed as a book, where all sources are properly referenced, according to a good practice in scientific publications.

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    Lauge Hansen classification of ankle fractures

    Lauge-Hansen classification of ankle fractures is based on the mechanism of trauma. It describes position of the foot (supination or pronation) and the direction of the applied force (abduction, adduction, external rotation) at the time of the injury. Therefore, it uses two word description of its types. The five main groups can be subdivided into stages according to the degree of severity.

    Type Abbrev. Weber equivalent
    Supination-Adduction SA Weber A
    Supination-Eversion (External Rotation) SE (SER) Weber B
    Pronation-Abduction PA Weber C
    Pronation-Eversion (External Rotation) PE (PER) Weber C
    Pronation-Dorsiflexion PD Weber C


    1. Hansen, H. Lague. Ankelbrud I. Genetisk diagnose og reposition. Diss Munksgaard, Kbhn; 1942.
    2. Yde J. The Lauge Hansen classification of malleolar fractures. Acta Orthop Scand. 1980 Feb;51(1):181–92
    3. Okanobo H, Khurana B, Sheehan S, Duran-Mendicuti A, Arianjam A, Ledbetter S. Simplified Diagnostic Algorithm for Lauge-Hansen Classification of Ankle Injuries. Radiographics. 2012 Mar 1;32(2):E71–E84.

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