Reimann R, Tschemernjak J, Strohmaier S
Anatomisches Institut der Universität Graz.
Acta Anat (Basel). 1991;140(4):319-28.
By the manual test of the lumbosacral instability described by Eder and Tilscher we can never find out for certain whether the fifth lumbar vertebra can be shifted ventrally above the sacrum. Before this test the patient has to be turned over on to his side with hips flexed, which causes a ventral flexion (anteflexion) of the lumbosacral segment. During the test, however, the lumbosacral segment is forced to a dorsal flexion (retroflexion); therefore the spinous process of the fifth lumbar vertebra retires from the back surface simulating a sliding forward of the whole vertebra.
通过埃德尔（Eder）和蒂尔舍尔（Tilscher）所描述的腰骶部不稳定的手动测试，我们永远无法确切查明第五腰椎是否能在骶骨上方腹侧移位。在该测试之前，患者必须侧卧并屈髋，这会导致腰骶段腹侧屈曲（前屈）。然而，在测试过程中，腰骶段被迫背侧屈曲（后屈）；因此，第五腰椎的棘突从背面退回，模拟整个椎体向前滑动。
