Contrast arthrography of the equine temporomandibular joint.

Summary

# Contrast Arthrography of the Equine Temporomandibular Joint Temporomandibular joint disorders in horses are increasingly recognised as a source of clinical dysfunction, yet imaging the soft tissue structures within this joint has relied upon expensive cross-sectional modalities like CT and MRI, leaving a significant diagnostic gap for most practitioners. Kim, Reisbig and Carmalt evaluated contrast arthrography as a more accessible alternative, using cadaveric equine heads to develop and refine radiographic projections that would visualise intra-articular structures following injection of contrast medium. Their work established feasible positioning and projection techniques that successfully outlined the joint capsule, meniscus and articular cartilage margins, demonstrating that contrast arthrography can reveal soft tissue pathology previously visible only on advanced imaging. For farriers, veterinarians and allied professionals managing horses with suspected TMJ dysfunction, these findings offer a practical diagnostic tool that requires only standard radiographic equipment and intra-articular injection—considerably more accessible than CT or MRI for investigating poor performance, unilateral mastication problems, or unusual head carriage. Further clinical application of these techniques could refine diagnosis and guide targeted therapeutic intervention without necessitating referral for advanced imaging in many cases.

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Key Findings

• •Contrast arthrography offers a more accessible alternative to CT and MRI for assessing equine TMJ soft tissue structures
• •Specialist radiographic projections can highlight osseous abnormalities of the TMJ
• •Current imaging modalities for TMJ assessment are limited by cost and availability constraints

Conditions Studied

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