Imaging Studies
- Standard anteroposterior and lateral radiographs of the elbow are sufficient for evaluation of isolated olecranon fractures.
- Direct supervision of the x-ray process may be necessary to ensure that true anteroposterior and lateral radiographs are obtained.
- The radiocapitellar view may be helpful for delineation of the radial head and capitellar fractures.
Staging
Several classification systems have been suggested.
- The Arbeitsgemeinschaft für Osteosynthesefragen (AO) - Association for the Study of Internal Fixation (ASIF) classification, used by the Orthopaedic Trauma Association, divides the fractures into 3 broad categories as follows[7] :
- Type A fractures are extra-articular.
- Type B fractures are intra-articular.
- Type C fractures are intra-articular fractures of both the radial head and olecranon.
- Schatzker developed a classification with 6 types as follows (types A, B, and C are intra-articular fractures):
- Type A is a simple transverse fracture.
- Type B is a transverse impacted fracture.
- Type C is an oblique fracture.
- Type D is a comminuted fracture.
- Type E is a more distal fracture, which actually is extra-articular.
- Type F is a fracture dislocation.
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