Implantable knee joint decompression device

The invention discloses an implantable knee joint decompression device, and relates to the technical field of orthopedic medical instruments, the implantable knee joint decompression device comprises a first side fixing plate and a second side fixing plate, the first side fixing plate and the second side fixing plate are respectively installed on the inner cortex of the thighbone far end and the inner cortex of the tibia near end; the end face, facing the first side fixing plate, of the second side fixing plate is universally and rotationally connected with a supporting rod. A sliding hole is formed in the end, deviating from the second side fixing plate, of the supporting rod. The end face, facing the second side fixing plate, of the first side fixing plate is universally and rotationally connected with a sliding shaft. The sliding shaft is slidably arranged in the sliding hole, and a limiting table is convexly arranged on the outer side wall of the part, outside the sliding hole, of the sliding shaft; an el