Table 1 Question answered yes/no (1/0) defining the fracture groups of proximal humerus fractures. The “0”s have been omitted for clarity
From: Validity of humerus fracture classification in the Swedish fracture register
A1 | A1.3 | A2 | A3 | B1 | B2 | B3 | C1 | C2 | C2.3 | C3 | C3.1 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Two-part extra-articular | 1 | 1 | 1 | 1 | ||||||||
Tuberosity only | 1 | |||||||||||
Three-part, extra-articular – bifocal | 1 | 1 | 1 | |||||||||
Four-part, articular | 1 | 1 | 1 | 1 | ||||||||
Glenohumeral dislocation | 1 | 1 | 1 | |||||||||
Metaphyseal impaction/stable | 1 | 1 | 1 | |||||||||
Anatomical neck only | 1 | |||||||||||
Head split | 1 | |||||||||||
Proximal segment (inside the square) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |