A review of equine tibial fractures.
Authors: Bowers Kristin, Weinhandl Joshua T, Anderson David E
Journal: Equine veterinary journal
Summary
# Equine Tibial Fractures: Current Understanding and Clinical Implications Whilst tibial fractures represent a relatively small proportion of equine musculoskeletal injuries, their poor prognosis in adult horses—particularly complete fractures—makes them a significant clinical concern across racing and sport disciplines. Bowers, Weinhandl and Anderson undertook a comprehensive literature review to synthesise current knowledge on tibial fracture aetiology, biomechanics, treatment and prevention, distinguishing between traumatic impact injuries and fatigue-induced stress fractures that develop through accumulated microtrauma during training. The review identifies stress fractures as the second most common stress injury in racing Thoroughbreds, with documented risk factors including young age, early-stage race training and return to work following rest periods; notably, fracture propagation in both impact and fatigue scenarios depends on applied force magnitude and the local composition and alignment of the mineralised collagen matrix within the tibial lamella. Incomplete or stress fractures managed conservatively carry a favourable prognosis for return to athletics, whilst complete fractures require careful case selection for open reduction and internal fixation to achieve successful outcomes. For practitioners involved in training, conditioning or post-injury management, this evidence underscores the importance of graduated return-to-work protocols, early diagnostic imaging (particularly in young horses showing non-specific lameness), and consideration of individual tibial mineralisation and biomechanical loading patterns when designing training programmes to mitigate fatigue fracture risk.
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Practical Takeaways
- •Early detection and rapid diagnosis of tibial fractures are critical; modify training and racing conditions for young horses in early training phases to reduce fatigue fracture risk
- •Conservative management of stress fractures and incomplete fractures yields good athletic recovery prospects, reserving surgical intervention for complete fractures with appropriate case selection
- •Monitor horses at high risk (young Thoroughbreds, those recently returning from rest) closely during early race training phases to catch stress fractures before progression
Key Findings
- •Tibial stress fractures are the second most common stress fracture in racing Thoroughbreds, with young age and early race training identified as primary risk factors
- •Fracture propagation in both impact and fatigue fractures depends on force magnitude and local mineral composition/alignment of collagen in the tibial lamella
- •Complete tibial fractures in adult horses have limited treatment options, but open reduction and internal fixation with careful case selection can achieve successful outcomes
- •Tibial stress fractures and minimally displaced incomplete fractures have good prognosis for athletic recovery when treated conservatively