Tibial plateau longitudinal osteotomy protector

The utility model discloses a tibial plateau longitudinal osteotomy protector which comprises a protection sheet and a handle, the protection sheet comprises a hook part, a first arc section and a second arc section which are sequentially connected from head to tail, the circle center of the first arc section and the circle center of the second arc section are located on the two sides of the protection sheet respectively, and the handle is connected with the second arc section. An operator only needs to hold the handle with one hand to keep the position of the protection sheet immovable and hold the cutter with the other hand, and the operation can be simultaneously carried out with the two hands without mutual interference. When the cutter conducts osteotomy inwards and touches the protective sheet, an operator can be reminded to reach the rearmost side of osteotomy, and the operator does not need to continue to conduct osteotomy backwards, so that surrounding tissue on the rear side of the tibial plateau is