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Illustrations of the Gartland classification of supracondylar humeral fractures.
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Case Discussion
The Gartland classification is used to classify supracondylar humeral fractures:
Type I: non-displaced or minimally displaced (<2 mm) supracondylar fracture
Type II: displaced (>2 mm) supracondylar fracture with an intact, yet hinged, posterior cortex
Type III: displaced supracondylar fracture with no meaningful cortical contact
Type IV: displaced; multidirectional instability due to an incompetent periosteal hinge, being unstable in both flexion and extension