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.

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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 head of radius - Mason classification of proximal radial fractures

    The original Mason classification was devised in 1954 and comprised three types. The modified Mason classification of proximal radial fractures describes four basic types. It has value in both treatment decision and prognosis.

    Type Description
    Type I undisplaced or minimally displaced, minimal joint involvement
    Type II bone fragments separated by at least 2mm, the fragments may be rotated or angulated
    Type III comminuted fracture
    Type IV comminuted fracture with elbow dislocation

    References:

    1. Mason ML. Some observations on fractures of the head of the radius with a review of one hundred cases.  Br J Surg 1954;42:123-132.
    2. Johnston GW. A follow-up of 100 cases of fracture of the head of the radius with review of the literature.  Ulster Med J 1962;31:51-56.
    3. Broberg MA, Moorey BF. Results of treatment of fracture-dislocations of the elbow. Clin Orthop. 1987;216:109-119.

    4. Baratz M, Watson AD, Imbriglia JE. Orthopaedic Surgery: The Essentials. Thieme; 1999:339
    5. Matsunaga FT, Tamaoki MJ, Cordeiro EF, Uehara A, Ikawa MH, Matsumoto MH, et al. Are classifications of proximal radius fractures reproducible? BMC Musculoskelet Disord. 2009 Dec 1;10(1):1–5.

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