[Task]Provided is the spinal fixation system that facilitates surgical operations and improves reliability in stable fixation to a spine.[Means to solve the task]A spinal fusion system 1A includes a connector 6A (6A') detachably connected to a rod 3, and a hook member 7A (7A) connected to the connector 6A (6A') and engaged with a vertebral arch. Thereby, in particular, reliability in stable fixation to the spine can be improved.
