5 5 Kaas L, van Riet RP, Turkenburg JL, Vroemen JP, van Dijk CN, Eygendaal D. Also, clinically relevant associated lesions are not common. Bone Joint J 2013 95-B(02):151-159 Taking into account its characteristics, type 1 fractures are considered stable and do not present mechanical joint blockage. Eur J Orthop Surg Traumatol 2014 24(07): 1133-1137, 4 4 Duckworth AD, McQueen MM, Ring D. Management of Mason type 1 radial head fractures: a regional survey and a review of literature. 1 1 Mahmoud SS, Moideen AN, Kotwal R, Mohanty K. They correspond to between 64 and 74% of all fractures of the radial head. Clin Orthop Relat Res 1987 (216):109-119įractures type 1 are caused by low-energy trauma. Results of treatment of fracture-dislo-cations of the elbow. Some observations on fractures of the head of the radius with a review of one hundred cases. Finally, type 4 are the fractures with elbow dislocation. If the fracture is displaced by 2 mm or more or involve 30% of the head, it is considered type 2. Type 1 fractures are non-displaced or minimally displaced (displaced by no more than 2 mm), and the size of the fragment should include up to 30% of the head (articular surface). Br J Surg 1954 42 (172):123-132 Broberg and Morrey classify them in four types (modification of the Mason classification). These fractures occur with an indirect trauma through the long axis of the radius during a fall with the forearm pronated and partially flexed. Fractures of the radial head account over 50% of all fractures of the forearm.
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