The AO-ASIF (Arbeitsgemeinschaft fur Osteosynthesefragen, Association for the Study of Internal Fixation) developed a classification system for fractures, based on location and type of fracture.
Code for location: 13 (humerus, distal)
Locations:
(1) extra-articular (A)
(2) partial articular (B)
(3) complete articular fracture (C)
|
Extra-articular |
Type of Fracture |
Fracture Code |
|
apophyseal avulsion |
lateral epicondyle |
A1.1 |
|
|
medial epicondyle, non-incarcerated |
A1.2 |
|
|
medial epicondyle, incarcerated |
A1.3 |
|
metaphyseal, simple |
oblique downwards and inwards |
A2.1 |
|
|
oblique downwards and outwards |
A2.2 |
|
|
transverse |
A2.3 |
|
metaphyseal, multi-fragmentary |
with an intact wedge |
A3.1 |
|
|
with a fragmented wedge |
A3.2 |
|
|
complex |
A3.3 |
|
Partial Articular Fracture |
Type of Fracture |
Fracture Code |
|
lateral sagittal |
capitellum |
B1.1 |
|
|
transtrochlear simple |
B1.2 |
|
|
transtrochlear multi-fragmentary |
B1.3 |
|
medial sagittal |
transtrochlear simple, through the medial side (Milch I) |
B2.1 |
|
|
transtrochlear simple, through the groove |
B2.2 |
|
|
transtrochlear multi-fragmentary |
B2.3 |
|
frontal |
capitellum |
B3.1 |
|
|
trochlea |
B3.2 |
|
|
capitellum and trochlea |
B3.3 |
|
Complete Articular Fracture |
Type of Fracture |
Fracture Code |
|
articular simple, metaphyseal simple |
with slight displacement |
C1.1 |
|
|
with marked displacement |
C1.2 |
|
|
T-shaped epiphyseal |
C1.3 |
|
articular simple, metaphyseal multi-fragmentary |
with intact wedge |
C2.1 |
|
|
with a fragmented wedge |
C2.2 |
|
|
complex |
C2.3 |
|
multi-fragmentary |
metaphyseal simple |
C3.1 |
|
|
metaphyseal wedge |
C3.2 |
|
|
metaphyseal complex |
C3.3 |
Specialty: Surgery, orthopedic, Emergency Medicine, Critical Care, Surgery, general
