Distal physeal fractures of the tibia occur in young horses typically less than one year of age. They occur secondary to trauma. In general the fractures are of the Salter-Harris Type I and typically have minimal displacement. Lameness is typically severe and soft-tissue swelling is variable.
Careful radiographic examination of the distal tibia is required to identify the fractures. Most fractures are not or only minimally displaced.
Tibial fractures usually develop as a result of trauma, such as kicks or falls. The exception to this are tibial stress fractures, which are an accumulation of cyclic loading and bone fatigue.
Fracture types overview
The most common types of tibial fractures are:
Salter Harris Type II
Tibial crest fractures
Simple diaphyseal fractures
Comminuted diaphyseal fractures
Diaphyseal stress fractures
Medial malleolus fractures
Lateral malleolus fractures
Distal physeal fractures
Radiography provides the most meaningful information as to location and configuration of the fracture(s). In most cases 4 views at 45 degree intervals provide adequate information for an exact diagnosis. For the evaluation of the proximal tibia typically a lateromedial and a caudocranial projection each is enough. Nuclear scintigraphy is useful in the identification of tibial stress fractures, which may be radiographically inapparent.