References
EquineReview
Abstract
Introduction:
This edition of the Equine Review looks at recent papers on osteochondral fragmentation and surgical removal of intra-articular bodies from the cervical articular process joints, and the effect of bit chewing on gastrointestinal transit time in clinically normal horses.
Recent advances in technology now allow computed tomography (CT) imaging of the entire equine cervical region, which has significantly advanced the investigation of cervical dysfunction. Osteochondral fragmentation of the cervical articular process joints (CAPJ) has been described in isolated case reports but is increasingly recognised in horses undergoing CT examination of the neck.
In a recent retrospective case series, Tucker et al (2022a) described the prevalence and clinical features of osteochondral fragmentation within the CAPJ in 55 horses undergoing CT of the neck.
Fragmentation was present in 13/55 (24%) of cases, in a range of breeds, ages and disciplines. Within the fragment group, a total of 22 fragments were identified in 15 CAPJs distributed throughout the cervical region, including the C7/T1 APJ. In 6/13 horses, the osteochondral fragmentation was considered the primary cause of the cervical dysfunction, and 11/13 horses had additional CT abnormalities. Cervical radiographs were available for 10/13 horses; mineral attenuating fragments were identified in only four cases (40%).
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