Computed tomographic features of lesions detected in horses with tarsal lameness.
Authors: Raes E, Bergman H J, Van Ryssen B, Vanderperren K, Stock E, Saunders J H
Journal: Equine veterinary journal
Summary
# Computed Tomographic Features of Tarsal Lesions in Lame Horses Tarsal pain represents a significant cause of hindlimb lameness, yet radiography and ultrasonography sometimes fail to provide definitive diagnoses, creating a clinical gap that advanced imaging might address. Raes and colleagues conducted a CT-based analysis of tarsal lesions in horses presenting with lameness localised to the tarsus, documenting the morphological characteristics of various pathological changes visible on cross-sectional imaging. The study provided the first systematic description of CT features associated with different tarsal conditions, filling a notable void in the equine imaging literature and establishing reference imaging criteria for practitioners encountering inconclusive radiographic and ultrasound findings. These CT-derived lesion descriptions have practical value for veterinarians working through diagnostic protocols in cases of obscure tarsal lameness, particularly when conventional imaging modalities prove non-diagnostic or when surgical planning requires precise anatomical detail. Understanding how different tarsal pathologies present on CT—whether degenerative joint disease, bone fragments, ligamentous involvement, or other structural damage—enables more confident clinical decision-making and may reduce the need for exploratory arthroscopy in selected cases.
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Practical Takeaways
- •When radiographs and ultrasound don't clarify the cause of hock lameness, CT should be considered as the next diagnostic step before proceeding to treatment
- •CT can detect tarsal lesions that may be missed by conventional imaging, potentially improving diagnostic accuracy and treatment planning
- •Understanding CT appearance of common tarsal lesions helps veterinarians communicate findings more clearly and make better clinical decisions
Key Findings
- •CT imaging provides detailed visualization of tarsal lesions when radiography and ultrasonography are inconclusive
- •Study describes CT features of various tarsal pathologies in lame horses
- •CT is valuable as an additional diagnostic imaging modality for tarsal joint disease