Diagnosis

Extraarticular simple fracture 

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1. Extraarticular, simple oblique fracture 
2. Extraarticular, simple transverse fracture 

1. Extraarticular, simple oblique fracture 

Extraarticular, simple oblique fracture

This fracture type is classified by the AO/OTA as 13A2.2.

This fracture may occur in a young patient with strong bone. Shear forces lead to an oblique separation of the metaphyseal/articular block from the shaft. Due to strong rotational forces at the level of the elbow, stabilization with plates on the ulnar and radial columns is preferred. The plates should be applied in a compression mode.

The obliquity of the fracture plane can be in either direction:

  • Obliquely downward and medially
  • Obliquely downward and laterally

Extraarticular simple fracture, obliquely downward and medially

Image taken from Orozco R, et al. (1998) Atlas of Internal Fixation. Used with kind permission.

2. Extraarticular, simple transverse fracture 

Extraarticular, simple transverse fracture

This fracture type is classified by the AO/OTA as 13A2.3.

These are transverse fractures of the distal humeral metaphysis.

The typical patient with this fracture is an elderly woman with osteoporotic bone. Articular involvement may be present, but may not be obvious on the initial x-rays.

Extraarticular, simple transverse fracture