Tibia intramedullary orientator

The invention provides a tibia intramedullary orientator which comprises a body, a transverse frame and a rotary adjusting plate. A long nail hole and an orientation rod hole which run through the upper end face and the lower end face are formed in the body. The rotary adjusting plate is arranged on the side face of the body. The lower end of the rotary adjusting plate and one end of the transverse frame are fixedly connected to form an L-shaped structure. The joint of the rotary adjusting plate and the transverse frame is rotationally connected to the body through a pin. Angle indicating scales are arranged on the portion, corresponding to the upper end of the rotary adjusting plate, of the body. By adjusting the placement position of the orientator, the tibia line of force is obtained; the varus angle, hallux valgus angle and caster angle required by osteotomy are obtained by adjusting the different angles of the orientator, the problems of osteotomy orientation and osteotomy determination in knee joint rep