There are two types of hip joint replacement surgery. According to the surgical method, the positions are as follows: 1. Traditional surgical access method: after surgery, patients need to hold a triangular pillow between their legs and cannot put anything under their legs, and patients who undergo this traditional surgical method are prone to dislocation and need to avoid stretched legs, sitting on very low benches, sofas, etc. for several weeks; 2. Minimally invasive surgical access method: after surgery, patients can position their legs at will and do any movement, playing on the bed, flipping their heads, etc.