The Orthopaedic Trauma Association (OTA) classification divides fractures of the radial diaphysis in the forearm into 7 groups.
Main Group |
Features |
Group |
simple |
transverse |
I |
simple |
oblique with angle > 30° |
II |
simple |
spiral |
III |
butterfly fragment |
fragment involves < 50% of shaft |
IVA |
butterfly fragment |
fragment involves > 50% |
IVB |
comminuted |
involves < 50% of shaft |
VA |
comminuted |
involves > 50% |
VB |
segmental |
3 or 4 fragments |
VIA |
segmental |
with longitudinal split or comminuted |
VIB |
bone loss |
loss involves < 50% of shaft |
VIIA |
bone loss |
loss involves > 50% |
VIIB |
where:
• I assume an oblique fracture with angle <= 30° would be considered Type I (transverse).
• A 50% involvement is not included in the butterfly, comminuted or bone loss groups. For the implementation I will use >= 50%.
Specialty: Surgery, orthopedic, Emergency Medicine, Critical Care, Surgery, general