Torzilli P A, Greenberg R L, Hood R W, Pavlov H, Insall J N
J Bone Joint Surg Am. 1984 Dec;66(9):1438-42.
We performed biomechanical stress tests preoperatively on the knees of fifty-one patients with an injury to the knee. We measured the amount of anterior and posterior tibial translation at 90 degrees of knee flexion using a roentgenographic technique and a fifty-newton joint load. Knees with an isolated meniscal tear exhibited no abnormal motion. There was no difference in motion of the knee between patients with a rupture of the anterior cruciate ligament and patients with this injury who had had a prior medial meniscectomy. We found that prior knee surgery that was not associated with stability did not adversely affect the test procedure. A significant finding, however, was that only nineteen of twenty-five patients with a ruptured anterior cruciate ligament had greater excursion on the injured side compared with the uninjured knee. Because of this inconsistent result, a biomechanical stress test at 90 degrees of knee flexion measuring anterior and posterior translation under a fifty-newton joint load appears insufficient in itself to be of clinical use.
我们对51例膝关节损伤患者的膝盖进行了术前生物力学应力测试。我们使用X线照相技术和50牛顿的关节负荷，在膝关节屈曲90度时测量胫骨前后移位的量。单纯半月板撕裂的膝盖未表现出异常活动。前交叉韧带断裂患者与先前接受过内侧半月板切除术的此类损伤患者之间，膝关节活动无差异。我们发现，先前与稳定性无关的膝关节手术并未对测试程序产生不利影响。然而，一个重要的发现是，在25例前交叉韧带断裂的患者中，只有19例患侧的移位幅度比未受伤的膝盖更大。由于这个结果不一致，在50牛顿关节负荷下测量膝关节屈曲90度时前后移位的生物力学应力测试本身似乎不足以用于临床。
