The type of fracture classification used in this context is the Gartland classification, which is specifically used for describing supracondylar humerus fractures, typically in children. The Gartland classification categorizes these fractures based on the degree of displacement:
- Gartland type 1: Non-displaced fractures.
- Gartland type 2: Displaced fractures with an intact posterior cortex.
- Gartland type 3: Completely displaced fractures with no cortical contact.
Given this information, a Gartland type 3 fracture is a completely displaced supracondylar humerus fracture, indicating a loss of stabilization and alignment, which often necessitates surgical intervention to realign and fix the fracture.
Thus, the correct classification for the fracture in question is: Gartland type 3.