The Orthopaedic Trauma Association (OTA) classified a fracture involving a metatarsal bone in the foot.
Toe |
Metatarsal |
Great (Thumb) |
T |
Index |
I |
Middle |
M |
Fourth (Ring) |
R |
Fifth (Little) |
L |
OTA designation: 81
Fracture Location, Type |
Designation |
proximal extra-articular |
A1 |
proximal, partial articular |
B1 |
proximal, articular |
C1 |
diaphysis, simple |
A2 |
diaphysis, wedge |
B2 |
diaphysis, complex |
C2 |
distal, extra-articular distal |
A3 |
distal, partial articular |
B3 |
distal, articular |
C3 |
Fracture |
Designation |
avulsion |
A1.1 |
simple |
A1.2 |
multifragmentary (wedge, complex) |
A1.3 |
split |
B1.1 |
depression |
B1.2 |
split/depression |
B1.3 |
simple articular/metaphysis |
C1.1 |
simple articular, multi-fragmentary metaphysis |
C1.2 |
multi-fragmentary articular |
C1.3 |
spiral |
A2.1 |
oblique |
A2.2 |
transverse |
A2.3 |
spiral |
B2.1 |
bending |
B2.2 |
fragmented |
B2.3 |
segmental |
C2.1 |
irregular |
C2.2 |
NA |
C2.3 |
avulsion |
A3.1 |
simple |
A3.2 |
multi-fragmentary |
A3.3 |
split |
B3.1 |
depression |
B3.2 |
split/depression |
B3.3 |
simple articular/metaphysis |
C3.1 |
simple articular, multi-fragmentary metaphysis |
C3.2 |
multi-fragmentary articular |
C3.3 |
Specialty: Surgery, orthopedic, Emergency Medicine, Critical Care, Surgery, general