"The Neer classification is the most frequently used system alongside the AO classification of proximal humeral fractures (c. 2025) 10."
"none of the parts are displaced (i.e."
"two parts are displaced (i.e. >1 cm or >45°)"
Expected headings
"Fracture parts"
"Displacement"
"Classification"
"One-part fracture"
"Two-part fracture"
"Three-part fracture"
"Four-part fracture"
"Valgus impacted four-part fracture"