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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    Fracture of olecranon - Mayo classification

    Mayo classification divides fractures of olecranon according to stability, displacement, and comminution. Each of the three basic types is divided into two subtypes according to the presence of comminution.

    Type Description
    Type I undisplaced
    A) non-comminuted
    B) comminuted
    Type II displaced >3mm, stable
    A) non-comminuted
    B) comminuted
    Type III displaced >3mm, unstable:
    A) non-comminuted
    B) comminuted


    1. Morrey BF, Adams RA: Fractures of the proximal ulna and olecranon, in The Elbow and its Disorders. Philadelphia, WB
    Saunders, 1993, pp 405–428.
    2. Newman SDS, Mauffrey C, Krikler S. Olecranon fractures. Injury. 2009 Jun;40(6):575–81.
    3. Veillette CJH, Steinmann SP. Olecranon Fractures. Orthopedic Clinics of North America. 2008 Apr;39(2):229–36.


    Mayo classification of olecranon fractures - displaced, non-displaced, comminuted, displaced

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