A surgery device for high tibial osteotomy

The present creation provides a surgery device for high tibial osteotomy comprising a substrate, a guiding slot, a guiding side, and a plural of fixing slots. The substrate has a first surface and an edge. The guiding slot is disposed on the first surface for guiding a saw and limiting the saw on a first cutting position. The guiding side is disposed on the edge for guiding the saw on a second cutting position. The fixing slots are disposed on the first surface for fixing the surgery device on a surface of a tibial. Using the present creation, the saw will cut the tibial according to the first and the second cutting position for standardization of the high tibial osteotomy. Compared to the prior art, the present creation can improve the efficiency and accuracy of the surgery.