Diagnostic Imaging, Department of Companion Animals and Horses, University of Veterinary Medicine Vienna (Vetmeduni), Vienna, Austria, Veterinaerplatz 1, 1210, Vienna, Austria.
Department of Veterinary Medical Imaging and Small Animal Orthopaedics, Ghent University, Merelbeke, Ghent, Belgium, Salisburylaan 133, 9800, Merelbeke, Belgium.
BMC Vet Res. 2022 Oct 24;18(1):377. doi: 10.1186/s12917-022-03450-x.
The present study evaluated the frequency of supinator sesamoid bones (SSB) on radiography and computed tomography (CT). Interobserver agreement was evaluated in the detection of the SSBs in both methods. A correlation between the existence of SSBs and elbow diseases (ED) was assessed. For these purposes, radiographs, and CT scans of 100 dogs were scored by 3 observers.
The SSB was identified as a round to oval-shaped opacity and measured 0.5-6.56 mm × 0.5-6.2 mm. SSBs were reported in an average of 8,33% of dogs on radiographs and 26% of dogs on CT; a bilateral sesamoid bone was present in 43,52% and 76,92% of these dogs, respectively. Seventy-two percent of the SSBs was identified on CT were not detected on radiographs. The Kappa test showed a substantial agreement (κ = 0.691) and a perfect agreement (κ = 1) between the observers in the detection of SSBs on radiography and on CT scans respectively. Additionally, a weak positive correlation was detected between ED and the existence of SSBs.
A supinator sesamoid bone can be detected occasionally in the evaluation of the canine elbow joints by routine radiography. CT is superior to radiography for assessing SSBs with a higher interobserver agreement. The correlation of the existence of the SSBs and ED, needs further evaluations to prove a probable pathophysiological connection.
本研究评估了放射摄影术和计算机断层扫描（CT）中旋后肌豆状骨（SSB）的出现频率。评估了在这两种方法中检测 SSB 时的观察者间一致性。评估了 SSB 的存在与肘部疾病（ED）之间的相关性。为此，对 100 只狗的 X 光片和 CT 扫描进行了 3 位观察者的评分。
SSB 被鉴定为圆形至椭圆形不透明物，大小为 0.5-6.56mm×0.5-6.2mm。在 X 光片上，平均有 8.33%的狗和 CT 上 26%的狗报告有 SSB；双侧豆状骨分别存在于这些狗的 43.52%和 76.92%。在 CT 上识别的 72%的 SSB 在 X 光片上未被检测到。Kappa 检验显示，在检测 X 光片和 CT 扫描上的 SSB 时，观察者之间存在显著一致性（κ=0.691）和完全一致性（κ=1）。此外，还检测到 ED 和 SSB 的存在之间存在弱正相关。
在常规放射摄影术评估犬肘部关节时，偶尔可以检测到旋后肌豆状骨。CT 比 X 光更能评估 SSB，具有更高的观察者间一致性。SSB 的存在与 ED 之间的相关性需要进一步评估，以证明可能存在病理生理学联系。
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