Lloyd-Edwards Ralph A, Mulders Eva, Sloet van Oldruitenborgh-Oosterbaan Marianne M, Veraa Stefanie
Diagnostic Imaging, Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, The Netherlands.
VET.CT, Broers Building, 21 JJ Thomson Avenue, Cambridge CB3 0FA, UK.
Vet Sci. 2025 May 23;12(6):511. doi: 10.3390/vetsci12060511.
Headshaking is a common condition in horses, most cases are presumed idiopathic/trigeminal-nerve mediated. Diagnostic work-up of a headshaking horse may involve computed tomography (CT) of the head to exclude causative structural pathology. The relevance of the presence and severity of hyoid apparatus findings at CT to headshaking is unknown. A retrospective analysis of CT changes in the hyoid apparatus in horses was carried out. Comparisons were performed between horses with signs of headshaking and a control population and a subgroup of horses with signs of headshaking and no other 'likely relevant findings' to headshaking and the control population. The grade of temporohyoid joint sheath ossification, mineralisation of the tympanohyoid cartilage, and widening and narrowing of the temporohyoid joint all showed significant correlation with age. Findings of the remaining hyoid apparatus (fracture, deformation, or arthropathy) showed significant correlation with temporohyoid joint grade. Centres of ossification of the epihyoid, thyrohyoid, and lingual processes were described. No consistent association of headshaking to hyoid changes was found. Odds ratios were increased in many cases, particularly in comparisons of the subgroup with no 'likely relevant findings'; however, statistical significance was not reached. CT findings of the temporohyoid joint are not consistently associated with clinical signs of headshaking.
摇头是马匹常见的病症，大多数病例被认为是特发性/由三叉神经介导的。对摇头马匹进行诊断检查可能包括对头进行计算机断层扫描（CT）以排除引起病症的结构病理学因素。CT检查时舌骨器发现的存在及严重程度与摇头之间的相关性尚不清楚。对马匹舌骨器的CT变化进行了回顾性分析。在有摇头症状的马匹与对照组之间，以及在有摇头症状且无其他与摇头“可能相关发现”的马匹亚组与对照组之间进行了比较。颞舌骨关节鞘骨化程度、鼓舌骨软骨矿化以及颞舌骨关节的增宽和变窄均与年龄呈显著相关性。舌骨器其余部分的发现（骨折、变形或关节病）与颞舌骨关节分级呈显著相关性。描述了舌骨上、甲状舌骨和舌突的骨化中心。未发现摇头与舌骨变化之间存在一致的关联。在许多情况下，比值比有所增加，尤其是在无“可能相关发现”的亚组比较中；然而，未达到统计学显著性。颞舌骨关节的CT检查结果与摇头的临床症状并非始终相关。
