L C Berg1, J V Nielsen, M B Thoefner, P D Thomsen. 1. Department of Anatomy and Physiology, The Royal Veterinary and Agricultural University of Copenhagen, Bülowsvej 17, DK-1870 Frederiksberg C, Denmark.
Abstract
REASONS FOR PERFORMING STUDY: In equine patients, the cause of clinical signs possibly related to the cervical region is often difficult to diagnose. Ultrasonography allows quick and noninvasive visualisation, but reference material of the normal equine neck is needed. OBJECTIVES: To describe and document the normal ultrasonographic appearance of transverse scans in the cervical region with emphasis on the synovial articular facet joints, cervical vertebrae and paravertebral structures; and further, to provide images of frozen cross-sections for anatomical reference. METHODS: A study describing the normal ultrasonographic appearance of the cervical anatomy was performed. Transverse scans were obtained from second cervical vertebra (C2) to first thoracic vertebra (T1). Post mortem photographs of frozen cross-sections were obtained as anatomical reference. RESULTS: The structures were clearly visualised by ultrasonography and consistency was found between ultrasonographic images and corresponding cross-sectional anatomy. The articular facets varied between horses and facets (C2 to T1). Discrepancy in the existing anatomical descriptions was found. CONCLUSIONS AND POTENTIAL RELEVANCE: The anatomical and ultrasonographic description provides a reference for ultrasonographic evaluation of equine cervical facet joints, vertebrae and paravertebral structures. The findings and variations found are considered to reflect the naturally occurring variations in horses.
REASONS FOR PERFORMING STUDY: In equinepatients, the cause of clinical signs possibly related to the cervical region is often difficult to diagnose. Ultrasonography allows quick and noninvasive visualisation, but reference material of the normal equine neck is needed. OBJECTIVES: To describe and document the normal ultrasonographic appearance of transverse scans in the cervical region with emphasis on the synovial articular facet joints, cervical vertebrae and paravertebral structures; and further, to provide images of frozen cross-sections for anatomical reference. METHODS: A study describing the normal ultrasonographic appearance of the cervical anatomy was performed. Transverse scans were obtained from second cervical vertebra (C2) to first thoracic vertebra (T1). Post mortem photographs of frozen cross-sections were obtained as anatomical reference. RESULTS: The structures were clearly visualised by ultrasonography and consistency was found between ultrasonographic images and corresponding cross-sectional anatomy. The articular facets varied between horses and facets (C2 to T1). Discrepancy in the existing anatomical descriptions was found. CONCLUSIONS AND POTENTIAL RELEVANCE: The anatomical and ultrasonographic description provides a reference for ultrasonographic evaluation of equine cervical facet joints, vertebrae and paravertebral structures. The findings and variations found are considered to reflect the naturally occurring variations in horses.
Authors: Melinda R Story; Kevin K Haussler; Yvette S Nout-Lomas; Tawfik A Aboellail; Christopher E Kawcak; Myra F Barrett; David D Frisbie; C Wayne McIlwraith Journal: Animals (Basel) Date: 2021-02-06 Impact factor: 2.752
Authors: Joke Rijckaert; Bart Pardon; Luc Van Ham; Philip Joosten; Gunther van Loon; Piet Deprez Journal: BMC Vet Res Date: 2018-09-24 Impact factor: 2.741
Authors: Melinda R Story; Yvette S Nout-Lomas; Tawfik A Aboellail; Kurt T Selberg; Myra F Barrett; C Wayne Mcllwraith; Kevin K Haussler Journal: Front Vet Sci Date: 2021-12-10