An orthopedic damper system and method to control the degree of flexion and/or extension motion of the mobile vertebral segment while providing additional stability to the spine. The damper system includes an anchor having a spring hitch, a spring coupled to the spring hitch, and a cap coupled to the...http://www.google.de/patents/US20090149885?utm_source=gb-gplus-sharePatent US20090149885 - SPINAL FLEXION AND EXTENSION MOTION DAMPER
