Contrast-enhanced computed tomographic evaluation of the deep digital flexor tendon in the equine foot compared to macroscopic and histological findings in 23 limbs.

Summary

# Editorial Summary: Contrast-Enhanced CT for Deep Digital Flexor Tendon Evaluation Distal deep digital flexor tendinopathy remains a challenging diagnosis in equine practice, as conventional radiography and ultrasonography frequently fail to identify lesions that cause persistent foot lameness. This validation study compared contrast-enhanced computed tomography (CECT) directly against macroscopic and histological findings in 23 limbs to establish whether CECT could serve as a practical alternative to magnetic resonance imaging, which, whilst diagnostically superior, presents significant cost and logistical barriers for many practitioners. The researchers found that CECT reliably identified deep digital flexor tendon pathology and correlated well with post-mortem examination findings, offering improved soft-tissue contrast within the digital flexor apparatus compared to standard radiography. For equine practitioners managing chronic foot lameness, CECT represents a potentially more accessible diagnostic option than MRI when ultrasonography has been inconclusive, particularly given its lower cost and greater equipment availability in many veterinary centres. This validation provides evidence to support CECT's use in cases of suspected distal DDFT disease, particularly where advanced imaging is warranted but MRI access is limited.

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Key Findings

• •Contrast-enhanced computed tomography (CECT) was evaluated as a diagnostic alternative to MRI for identifying DDFT lesions in equine feet
• •Study compared CECT findings with macroscopic and histological examination in 23 limbs to validate the imaging technique
• •CECT has potential practical and financial advantages over MRI for diagnosing distal DDFT pathology

Conditions Studied

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