12-A3   Simple transverse fracture of the humeral diaphysis

12-A3 fractures are simple, transverse fractures of the diaphyseal humerus.

Transverse humeral fractures are rare.

12-A3 fractures occur due to direct trauma to the humerus, eg, in car accidents.

Clinical signs observed for 12-A3 fractures are:

• Non-weight bearing lameness
• Instability in the humerus with crepitus and pain

Craniocaudal and lateral radiographs are needed.

Thoracic trauma is common, and, therefore, radiographs of the thorax should be taken.

Radial nerve injury is common but, in most cases, temporary.