Authors of section

Author

Cassio Ferrigno

Executive Editor

Amy Kapatkin

General Editor

Noel Moens

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42-A2 Simple oblique tibial fracture

42-A2 fractures

42-A2 are simple oblique fractures of the tibial diaphysis.

Spiral fractures are not explicitly included in this classification. However, as their treatment is often similar they will be included for this reference under A2 type fractures.

Spiral and oblique fractures are usually caused by torsional forces.

definition
Oblique fractures can be subcategorized as “short oblique” (fracture line is between 30° and 60° relative to the long axis of the bone) and “long oblique” fractures (<30° relative to the long axis of the bone).

General considerations

The tibia has an S-shape in the frontal plane. In the sagittal plane, cat tibias are straighter than in dogs. Even though this will not influence the fracture fixation method, it is important to bear it in mind when reconstructing the fracture and restoring the normal anatomy.

definition

The fibula at the level of the tibia midshaft is very thin. For this reason, fractures of the fibula are generally not addressed.

definition

Etiology

42-A type fractures generally result from low energy trauma.

Clinical signs

Clinical signs observed in 42-A fractures are:

  • Swelling of the region
  • Abnormal movement in the tibia shaft
  • Pain

Cats with A1 type fractures may present with mild to severe non-weight bearing lameness. Cats with incomplete fractures may still be able to use the limb.

Imaging

Craniocaudal and lateral radiographic views are needed.