Fixing system for cervical posterior open-door expansive laminoplasty

The invention provides a fixing system for cervical posterior open-door expansive laminoplasty. The system comprises a spinous process side metal plate, the bottom of the spinous process side metal plate is provided with an oblique transitional metal plate integrated with the spinous process side metal plate, one end of the transitional metal plate is connected with one end of one universal joint through a connection shaft, and the other end of the universal joint is connected with a side block portion metal plate through a connection shaft. A titanium cable channel is formed in the upper portion of the spinous process side metal plate, and a spinous process nail hole is formed in the lower portion of the spinous process side metal plate. A side block screw hole is formed in the right end of the side block portion metal plate, and a metal ring is disposed at the left end of the side block portion metal plate. The metal ring is connected with one end of a titanium cable, and the extending end of the titanium c