Glassman Mathieu, Hofmeister Erik, Weh J Micheal, Roach Wesley, Torres Bryan, Johnston Spencer, Budsberg Steven
Department Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA.
Vet Surg. 2011 Oct;40(7):830-8. doi: 10.1111/j.1532-950X.2011.00857.x. Epub 2011 Sep 11.
To evaluate inter- and intraobserver variability in the measurement of distal tibial axis/proximal tibial axis angle (DPA) from lateral radiographs of canine tibia in dogs with cranial cruciate ligament rupture (CCLR).
Retrospective clinical study.
Dogs (n=100) with cranial cruciate ligament rupture.
Medical records of dogs diagnosed with CCLR were reviewed. In addition to signalment and TPA measurements, measured DPA (mDPA) was calculated for each lateral view of the tibia in each animal, twice, by 3 blinded observers. Subjective scoring of DPA (sDPA) was also recorded, twice, by 3 additional blinded observers from lateral views of the proximal half of the tibia in each dog. Inter- and intraobserver variability was measured by intraclass correlation coefficient (ICC) for each measurement. Correlation between mDPA and sDPA was also determined.
Median tibial plateau angle (TPA) of the subject population was 27.9° (range 18.8-41.3°; IQR: 25.5-30.75°). Mean ± SD mDPA was 6.50 ± 2.81° (confidence intervals [CI]: 5.94-7.06°; range 0-13.33°). There was no correlation between age and weight of dogs and the mDPA (P=.58 and .12). There was a moderate correlation between mDPA and TPA (r(2)=0.49, P<.0001). There was a moderate correlation between sDPA and mDPA (r(2)=0.27, P<.0001). Good inter- and intraobserver agreement was found in the measurement of mDPA.
mDPA is a reproducible measurement of caudal angulation of proximal tibia. Furthermore, mDPA of dogs with cranial cruciate ligament disease in this report are in concordance with previous reports.
评估在患有颅交叉韧带断裂（CCLR）的犬类中，通过犬胫骨侧位X线片测量胫骨干骺端轴/胫骨近端轴角（DPA）时观察者间和观察者内的变异性。
回顾性临床研究。
患有颅交叉韧带断裂的犬（n = 100）。
回顾诊断为CCLR的犬的病历。除了记录信号和TPA测量值外，3名不知情的观察者对每只动物的胫骨每个侧位视图计算两次测量的DPA（mDPA）。另外3名不知情的观察者也从每只犬胫骨近端一半的侧位视图记录两次DPA的主观评分（sDPA）。通过组内相关系数（ICC）测量每个测量值的观察者间和观察者内变异性。还确定了mDPA和sDPA之间的相关性。
受试群体的胫骨平台角（TPA）中位数为27.9°（范围18.8 - 41.3°；四分位间距：25.5 - 30.75°）。平均±标准差mDPA为6.50±2.81°（置信区间[CI]：5.94 - 7.06°；范围0 - 13.33°）。犬的年龄和体重与mDPA之间无相关性（P = 0.58和0.12）。mDPA与TPA之间存在中度相关性（r(2)=0.49，P <.0001）。sDPA与mDPA之间存在中度相关性（r(2)=0.27，P <.0001）。在mDPA测量中发现观察者间和观察者内具有良好的一致性。
mDPA是胫骨近端尾侧成角的可重复测量值。此外，本报告中患有颅交叉韧带疾病的犬的mDPA与先前报告一致。
