Generally speaking, you can’t do leg-crossing, leg-crossing, back-extension, squatting, etc. in the short term after hip replacement surgery.
1. Crossing the legs, cross-legged: If the hip replacement surgery is a posterior lateral incision or posterior lateral incision, the abductor muscles need to be separated during the surgery. Crossing the legs will cause the joint to undergo inward contraction and internal rotation, which will easily lead to posterior dislocation of the joint; and cross-legged movement will cause inward contraction of the hip joint, which will also be easy to dislocate, so it is not recommended.
2. Posterior extension and squatting: If the patient chooses anterior side incision during hip replacement surgery, it is usually necessary to prohibit posterior extension after the surgery, because anterior side incision is prone to anterior dislocation of the hip joint during posterior extension; while squatting will cause flexion of the hip joint, which will also lead to dislocation of the joint.
Patients after hip arthroplasty are recommended to carry out rehabilitation training under the guidance of professional rehabilitation physicians in order to minimize the adverse effects of the disease.