Department for Companion Animals and Horses, University Clinic for Small Animals, Small Animal Surgery, University of Veterinary Medicine, Vienna, Austria.
Department for Companion Animals and Horses, University Clinic for Small Animals, Small Animal Surgery, Section for Physical Therapy, University of Veterinary Medicine, Vienna, Austria.
PLoS One. 2019 Mar 28;14(3):e0214579. doi: 10.1371/journal.pone.0214579. eCollection 2019.
Measurement of fore and pelvic limb alignment in veterinary orthopedics is significant, as it is in human medicine. The establishment of reference ranges for alignments and comparing measured ranges in diseased animals to these reference values would allow veterinarians to specify the quantitative degree of an angular deformity, plan suitable treatments and evaluate treatment outcomes. Patellar luxation is a common orthopedic disease in small animal clinics. Severe grades of MPL may present with bone deformities or abnormal alignments; therefore, evaluation of the measurement methods of femoral and tibial alignment in dogs with different grades of patellar luxation to assess the accuracy and reliability of the measurements could be useful. In this retrospective study radiographs of 21 client-owned Chihuahuas that had been presented to the Small Animal Surgery of Vetmeduni Vienna from 2012-2016 with a diagnose of patellar luxation were selected. The measurements were performed on frontal, lateral and axial view radiographs to determine the femoral and tibial angles and to evaluate the intra- and inter-observer variabilities of the protocol. Radiographs of each dog were investigated by three observers. Intra-observer variability was based on measurements by each observer who repeated the protocol two times to evaluate repeatability. Inter-observer variability was based on the measurements between the three observers to evaluate the reproducibility of the protocol. The results of the study showed that 92.85% of inter-observer ICC (intra-class correlation coefficient) had high correlation, and the remaining 7.15% had good correlation. Intra-observer ICCs for measurements of the first observer were 28.57% high correlation and 50% good correlation. For the second observer, 100% high correlation was recorded, and for the third observer 71.42% high correlation and 14.28% good correlation was recorded. These results show that the selected methods have high correlation and could be used as a reliable method in veterinary orthopedics.
在兽医骨科中，测量前肢和后肢的对线非常重要，就像在人类医学中一样。建立对线的参考范围，并将患病动物测量的范围与这些参考值进行比较，可以让兽医指定角度畸形的定量程度，制定合适的治疗方案，并评估治疗效果。髌骨脱位是小动物诊所常见的骨科疾病。严重的 MPL 可能会出现骨骼畸形或异常对线；因此，评估不同等级髌骨脱位犬的股骨和胫骨对线测量方法，以评估测量的准确性和可靠性可能是有用的。在这项回顾性研究中，选择了 2012 年至 2016 年期间因髌骨脱位就诊于维也纳兽医大学小动物外科的 21 只客户拥有的吉娃娃犬的放射照片。在正面、侧面和轴向视图上进行测量，以确定股骨和胫骨角度，并评估该方案的观察者内和观察者间变异性。每只狗的放射照片由三位观察者进行评估。观察者内变异性基于每位观察者的测量值，每位观察者重复该方案两次以评估可重复性。观察者间变异性基于三位观察者之间的测量值，以评估方案的再现性。该研究的结果表明，92.85%的观察者间 ICC（组内相关系数）具有高度相关性，其余 7.15%具有良好相关性。第一观察者测量的观察者内 ICC 为 28.57%高度相关，50%良好相关。第二观察者记录了 100%的高度相关性，第三观察者记录了 71.42%的高度相关性和 14.28%的良好相关性。这些结果表明，所选方法具有高度相关性，可作为兽医骨科中的可靠方法。
