A systematic review evaluating the use of ultrasound in the identification of osteochondrosis in horses.
Authors: Hoey S, Stokes D, McAllister H, Puggioni A, Skelly C
Journal: Veterinary journal (London, England : 1997)
Summary
Osteochondrosis remains a significant concern in young horses, affecting welfare, athletic potential, and commercial value, yet current pre-purchase screening relies heavily on radiography despite its well-documented limitations in visualising cartilage pathology. Hoey and colleagues conducted a systematic review of the literature to evaluate whether ultrasonography could provide superior or complementary diagnostic information compared with radiography, arthroscopy, or post-mortem examination. The review revealed substantial inconsistency across available studies: marked heterogeneity in subject populations, small sample sizes, variable scanning protocols, and disparate reporting of results precluded any firm conclusions about ultrasound's diagnostic accuracy for osteochondral lesions. Without robust evidence establishing ultrasonography's sensitivity and specificity in detecting osteochondrosis across relevant equine joints, practitioners cannot confidently recommend it as a standalone screening tool or reliable alternative to radiography in pre-purchase contexts. This gap in the evidence base suggests an opportunity—and perhaps a clinical need—for well-designed prospective studies employing standardised ultrasound methodology and direct comparison with accepted reference standards, which could ultimately refine our diagnostic approach to this economically and welfare-significant condition.
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Practical Takeaways
- •Radiography remains the standard for pre-purchase osteochondrosis screening; ultrasound cannot yet replace it based on available evidence
- •While ultrasound may have potential for cartilage assessment, practitioners should not rely on it as a sole diagnostic tool for osteochondrosis without additional imaging confirmation
- •More rigorous comparative studies with standardized protocols are needed before ultrasound can be recommended as a validated alternative to traditional diagnostic methods
Key Findings
- •Systematic review identified a paucity of studies evaluating ultrasonography for osteochondrosis detection in horses with marked variation in populations, sample sizes, methods, and results
- •No strong evidence currently confirms the diagnostic accuracy and validity of ultrasonography compared to radiography, arthroscopy, or necropsy in detecting osteochondral lesions
- •Case series and single case reports describing ultrasonographic examination of articular cartilage exist but lack rigorous comparative validation