Extension limiting devices and methods of use for the spine

摘要

Medical devices and related methods for the treatment of spinal conditions are described herein. In one embodiment, an apparatus includes a support member configured to be implanted at least partially in a space between adjacent spinous processes and an actuator coupled to the support member. The apparatus also includes an elongate retention member having a first end coupled to the actuator and a second end coupled to either the support member or the actuator. The actuator is configured to be rotated such that the first end moves from a first location at a first distance from the second end, to a second location at a second distance from the second end. At least a portion of the elongate retention member is disposed at a non-zero distance from an outer surface of the support member when the first end of the elongate retention member is at its second location.