Farfan H F, Gracovetsky S
Spine (Phila Pa 1976). 1984 Oct;9(7):714-9. doi: 10.1097/00007632-198410000-00011.
(Clinical) instability is that (symptomatic) condition where, in the absence of new injury, a physiologic load induces abnormally large deformations at the intervertebral joint.
(临床)不稳定是指在无新损伤的情况下,生理负荷在椎间关节诱发异常大变形的(有症状)状态。