Osteochondral fragmentation of the cervical articular process joints; prevalence in horses undergoing CT for investigation of cervical dysfunction.
Authors: Tucker Rachel, Hall Yvonne S, Hughes Thomas K, Parker Russell A
Journal: Equine veterinary journal
Summary
# Editorial Summary: Osteochondral Fragmentation of Cervical Articular Process Joints The cervical articular process joints (APJs) are critical for neck mobility and stability in horses, yet little is known about degenerative pathology affecting these structures in living animals. With CT imaging of the cervical spine becoming more routinely available to equine practitioners, Tucker and colleagues conducted a retrospective analysis of mature horses that underwent cervical CT scanning for investigation of neck dysfunction, documenting the prevalence and characteristics of osteochondral fragments (OF) within the APJs. The researchers identified OF in a significant proportion of their population, establishing baseline prevalence data and exploring associations between imaging findings and the clinical presentations that prompted investigation. These findings are clinically important because APJ pathology is increasingly recognised as a source of cervical pain and performance limitation, yet previously could only be reliably diagnosed on CT; the study therefore provides evidence of how common this lesion is in horses presenting with neck problems and may help practitioners stratify diagnostic urgency and treatment planning. Understanding the prevalence of APJ fragmentation in horses with cervical dysfunction will inform future studies on whether such lesions are incidental findings or clinically significant contributors to poor performance, behaviour issues, or ridden comfort.
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Practical Takeaways
- •CT imaging is now a more accessible diagnostic tool for investigating horses with cervical dysfunction and may reveal osteochondral fragments in articular process joints
- •Veterinarians should be aware that osteochondral fragmentation of cervical APJs exists as a finding but its clinical significance remains to be determined
- •Further research is needed to correlate these imaging findings with clinical signs and determine which horses require treatment
Key Findings
- •Osteochondral fragmentation of cervical articular process joints can be identified on CT imaging in mature horses
- •The prevalence, clinical features and significance of cervical APJ osteochondral fragmentation are currently unknown and warrant investigation
- •CT imaging under general anaesthesia provides improved accessibility for detailed cervical spine evaluation in horses