AO classification of proximal humeral fractures | 合法醫療器材資訊網

AOclassificationofproximalhumeralfractures·A1:extra-articularunifocalfracture·A2:extra-articularunifocalfracturewithimpactedmetaphysealfracture ...

The Arbeitsgemeinschaft für Osteosynthesefragen/Orthopedic Trauma Association (AO/OTA) classification together with the Neer classification[1] is one of the most frequently used systems for classifying proximal humeral fractures. Like fractures in other bone segments, proximal humeral fractures are divided into three groups subject to the severity and complexity of the respective injury 1. 

In accordance with the Neer classification, the proximal humerus is divided into different parts and both the surgical neck and the anatomical neck form essential landmarks in the classification:

humeral head with the articular surface

metaphysis with greater tuberosity and lesser tuberosity

humeral shaft or proximal diaphysis

 The new AO/OTA 2018 classification compendium has ...