Mostafa Ayman, Nolte Ingo, Wefstaedt Patrick
Small Animal Hospital, College of Veterinary Medicine, Cairo University, Giza, Egypt.
Small Animal Hospital, University of Veterinary Medicine, Hannover, Foundation, Hannover, Germany.
Vet Radiol Ultrasound. 2018 Sep;59(5):516-528. doi: 10.1111/vru.12632. Epub 2018 Jun 5.
Medial coronoid process disease is a common leading cause of thoracic limb lameness in dogs. Computed tomography and arthroscopy are superior to radiography to diagnose medial coronoid process disease, however, radiography remains the most available diagnostic imaging modality in veterinary practice. Objectives of this retrospective observational study were to describe the prevalence of medial coronoid process disease in lame large breed dogs and apply a novel method for quantifying the radiographic changes associated with medial coronoid process and subtrochlear-ulnar region in Labrador and Golden Retrievers with confirmed medial coronoid process disease. Purebred Labrador and Golden Retrievers (n = 143, 206 elbows) without and with confirmed medial coronoid process disease were included. The prevalence of medial coronoid process disease in lame large breed dogs was calculated. Mediolateral and craniocaudal radiographs of elbows were analyzed to assess the medial coronoid process length and morphology, and subtrochlear-ulnar width. Mean grayscale value was calculated for radial and subtrochlear-ulnar zones. The prevalence of medial coronoid process disease was 20.8%. Labrador and Golden Retrievers were the most affected purebred dogs (29.6%). Elbows with confirmed medial coronoid process disease had short (P < 0.0001) and deformed (∼95%) medial coronoid process, with associated medial coronoid process osteophytosis (7.5%). Subtrochlear-ulnar sclerosis was evidenced in ∼96% of diseased elbows, with a significant increase (P < 0.0001) in subtrochlear-ulnar width and standardized grayscale value. Radial grayscale value did not differ between groups. Periarticular osteophytosis was identified in 51.4% of elbows with medial coronoid process disease. Medial coronoid process length and morphology, and subtrochlear-ulnar width and standardized grayscale value varied significantly in dogs with confirmed medial coronoid process disease compared to controls. Findings indicated that medial coronoid process disease has a high prevalence in lame large breed dogs and that quantitative radiographic assessments can contribute to the diagnosis.
内侧冠状突疾病是犬胸肢跛行的常见主要原因。计算机断层扫描和关节镜检查在诊断内侧冠状突疾病方面优于放射摄影，然而，放射摄影仍然是兽医实践中最常用的诊断成像方式。这项回顾性观察研究的目的是描述跛行大型犬内侧冠状突疾病的患病率，并应用一种新方法量化确诊为内侧冠状突疾病的拉布拉多犬和金毛寻回犬内侧冠状突和滑车下-尺骨区域的放射学变化。纳入了纯种拉布拉多犬和金毛寻回犬（n = 143只，206个肘部），有无确诊的内侧冠状突疾病。计算跛行大型犬内侧冠状突疾病的患病率。分析肘部的内外侧和头尾位放射照片，以评估内侧冠状突的长度和形态以及滑车下-尺骨宽度。计算桡骨和滑车下-尺骨区域的平均灰度值。内侧冠状突疾病的患病率为20.8%。拉布拉多犬和金毛寻回犬是受影响最严重的纯种犬（29.6%）。确诊为内侧冠状突疾病的肘部内侧冠状突短（P < 0.0001）且畸形（约95%），伴有内侧冠状突骨赘形成（7.5%）。约96%的患病肘部有滑车下-尺骨硬化，滑车下-尺骨宽度和标准化灰度值显著增加（P < 0.0001）。两组之间桡骨灰度值无差异。51.4%的内侧冠状突疾病肘部发现关节周围骨赘形成。与对照组相比，确诊为内侧冠状突疾病的犬内侧冠状突长度和形态以及滑车下-尺骨宽度和标准化灰度值有显著差异。研究结果表明，内侧冠状突疾病在跛行大型犬中患病率很高，定量放射学评估有助于诊断。
