Starke A, Böttcher P, Pfeil I
Tierärztliche Klinik Dresdner Heide, Dresden.
Tierarztl Prax Ausg K Kleintiere Heimtiere. 2013;41(3):145-54.
The aim of this study was to develop a new radiographic and measurement technique for use in the canine elbow (putting axial load on the joint during radiography and obtaining objective quantification of the resulting joint conformation), assess its reliability in relation to positioning artifacts and repeat measurements as well as to establish reference values. A radiographic technique for quantifying the radioulnar congruence or incongruence under load in vivo was to be developed.
In 27 dogs free of lameness, radiographs of 47 elbow joints with or without load (medio-lateral, cranio-caudal; anaesthetised dog in lateral recumbency), as well as radiographs with the animal standing (cranio-caudal) were examined. Digital measurements of the subchondral jointspace-width, subchondral bone-width and an angle were taken.
Reproducible length and angle measurements of anatomical landmarks in the elbow joint were obtained. By normalizing the length measurements parameters it was possible to compare radiographs taken from three different views in an animal as well as from different animals. Measurements from radiographs taken in a standing position correlated with those taken with or without load, but displayed poor reliability. The values of the measured parameters in radiographs with or without load showed a small range of dispersion, thus enabling the establishment of reference values. The examined reliabilities were significant for several parameters.
Taking radiographs in the standing dog is not practical and cannot be used as a standard procedure for our measurement technique. However, using radiographs with or without load in lateral recumbency it is possible to accurately describe the canine elbow joint and compile a set of reference values in the narcotised animal. It may be possible to objectively describe unphysiologic incongruency and to adequately discriminate it from physiologic conditions.
本研究的目的是开发一种用于犬肘关节的新的放射成像和测量技术（在放射成像过程中对关节施加轴向负荷，并对由此产生的关节形态进行客观量化），评估其相对于定位伪影和重复测量的可靠性，并建立参考值。要开发一种用于在体内负荷下量化桡尺关节一致性或不一致性的放射成像技术。
对27只无跛行的犬进行检查，拍摄47个肘关节在有或无负荷情况下的X线片（内外侧位、头尾位；麻醉后侧卧的犬），以及动物站立时的X线片（头尾位）。对软骨下关节间隙宽度、软骨下骨宽度和一个角度进行数字测量。
获得了肘关节解剖标志的可重复长度和角度测量值。通过对长度测量参数进行标准化，可以比较从动物的三个不同视图以及不同动物拍摄的X线片。站立位拍摄的X线片测量值与有或无负荷时拍摄的测量值相关，但可靠性较差。有或无负荷的X线片测量参数值的离散范围较小，因此能够建立参考值。对几个参数的检查可靠性具有显著性。
对站立的犬拍摄X线片不实用，不能用作我们测量技术的标准程序。然而，使用侧卧有或无负荷的X线片，可以准确描述犬肘关节，并在麻醉动物中编制一组参考值。有可能客观地描述非生理性不一致性，并将其与生理性情况充分区分开来。
