Steiner M E, Brown C, Zarins B, Brownstein B, Koval P S, Stone P
Harvard Community Health Plan, Boston, Massachusetts 02115.
J Bone Joint Surg Am. 1990 Oct;72(9):1307-15.
Thirteen subjects who had normal knees and fifteen patients who had a chronic rupture of the anterior cruciate ligament were tested in order to compare the measurements of tibiofemoral displacement as recorded by four commercial devices: the Acufex knee-signature system, the Genucom knee-analysis system, the Medmetric KT-1000 arthrometer, and the Stryker knee-laxity tester. Anterior and posterior displacement were measured at forces of eighty-nine newtons (twenty pounds) and 133 newtons (thirty pounds). We found significant differences in reproducibility of measurement among the devices. The Acufex, Medmetric, and Stryker devices had more reproducible measurements, and they could be used to identify 80 to 90 per cent of the normal subjects and anterior cruciate-deficient patients. The Genucom device had poorer reproducibility of measurement, and it tended to register greater differences in displacement between the right and left knees of normal subjects.
为了比较四种商用设备记录的胫股位移测量值，对13名膝关节正常的受试者和15名前交叉韧带慢性断裂的患者进行了测试，这四种设备分别是：Acufex膝关节特征系统、Genucom膝关节分析系统、Medmetric KT - 1000关节测量仪和Stryker膝关节松弛度测试仪。在89牛顿（20磅）和133牛顿（30磅）的力下测量前后位移。我们发现这些设备在测量的可重复性方面存在显著差异。Acufex、Medmetric和Stryker设备的测量具有更高的可重复性，它们可用于识别80%至90%的正常受试者和前交叉韧带损伤患者。Genucom设备的测量可重复性较差，并且它往往记录正常受试者左右膝关节之间更大的位移差异。
