Disclosed are cable fixation devices. The fixation devices are configured to keep tension in a polymer cable to secure a fracture or for other medical uses. In an embodiment, a fixation device for securing a fracture comprises a body and a piercing element, wherein the fixation device is configured to pierce a polymer cable arranged in the body by engaging the piercing element. In an embodiment, the fixation device further comprises a retensioning member, which may be operated to increase tension in the polymer cable after the polymer has been pierced by the piecing element. In an embodiment, the polymer cable comprises a braid or a yarn.
