Quadflieg Ina, Volk Holger A, Sake Björn, Metje Benjamin
Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, Hannover, Germany.
Institute for Animal Hygiene, Animal Welfare and Farm Animal Behavior, University of Veterinary Medicine Hannover, Hannover, Germany.
Front Vet Sci. 2024 May 9;11:1407761. doi: 10.3389/fvets.2024.1407761. eCollection 2024.
The recognition and diagnosis of canine temporomandibular joint (TMJ) disease can be a challenge, often leaving them undiagnosed. Although computed tomography (CT) has proved to be highly efficacious in detecting joint disease in the TMJ, morphometric and morphological studies of the normal TMJ have been scarce. Especially, skull type specific anatomical differences of the TMJ in dogs of different weights and skull morphologies have received limited attention.
This study aimed to compare the TMJ morphologies of dogs across different weight classes and skull types.
Retrospective study.
CT scans were used to measure the depth and width of the Fossa mandibularis and two angles between the Fossa mandibularis and the Caput mandibulae in a total of 92 dogs and 182 mandibular joints, respectively.
The TMJ varied in terms of weight groups and skull indices. Shallow mandibular pits, underdeveloped retroarticular processes, and reduced joint congruency were observed particularly in light-weight and brachycephalic dogs. Conversely, dolichocephalic animals displayed deep joint pits, pronounced joint congruency, and a well-developed Processus retroarticularis.
Observer learning curve; not every skull shape was represented in each weight group.
犬颞下颌关节（TMJ）疾病的识别和诊断可能具有挑战性，常常无法得到诊断。尽管计算机断层扫描（CT）已被证明在检测颞下颌关节疾病方面非常有效，但对正常颞下颌关节的形态测量和形态学研究却很少。特别是，不同体重和头骨形态的犬类颞下颌关节的头骨类型特异性解剖差异受到的关注有限。
本研究旨在比较不同体重类别和头骨类型的犬类颞下颌关节形态。
回顾性研究。
使用CT扫描分别测量了总共92只犬和182个下颌关节的下颌窝深度和宽度以及下颌窝与下颌头之间的两个角度。
颞下颌关节在体重组和头骨指数方面存在差异。特别是在轻体重和短头型犬中观察到下颌窝浅、关节后突不发达以及关节一致性降低。相反，长头型动物表现出深关节窝、明显的关节一致性和发达的关节后突。
观察者学习曲线；并非每个体重组都包含每种头骨形状。
