Acetabular prosthesis angle positioning device and method for total hip arthroplasty

An acetabular prosthesis angle positioning device for total hip arthroplasty, comprising a telescopic tripod, a spherical scale instrument, a first fixator, a main operating rod, a connecting device and an auxiliary operating rod, wherein the spherical scale instrument comprises a transparent spherical housing and a connecting ball clamped in the transparent housing, scale marks are arranged on the transparent spherical housing, and mark points fitted to the scale marks are arranged on the connecting ball;

• an end of the transparent spherical housing is connected to the telescopic tripod, the other end of the transparent spherical housing is provided with an opening, and the main operating rod penetrates the opening and is connected to the connecting ball;
• and the main operating rod is connected to the auxiliary operating rod through the connecting device, the auxiliary operating rod is hollow, and the auxiliary operating rod is parallel to the main operating rod;
• wherein the telescopic tripod comprises three telescopic rods, an end of each telescopic rod is hinged to the transparent housing, and the other end of each telescopic rod is provided with a screw rod configured to be connected to an acetabulum.