| 摘要 |
An instrument for measuring the stability of the cervical spine includes two arms each having, at one end, a contact plate configured for insertion into a space between two adjacent vertebral bodies, and, at an end opposite to the one end, an actuating member. The arms are movable relative to each other in at least one translational and one rotational degree of freedom via an articulated coupling in such a way that an axis of the translational degree of freedom and a pivot point of the rotational degree of freedom lie in the area of the contact plates. A displacement-measuring device and a rotation-measuring device are arranged on the arms.
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