A nurse is caring for a client who is postoperative following total hip arthroplasty. Which of the following actions should the nurse take to prevent dislocation of the prosthesis?

A. Raise the head of the client's bed to a high-Fowler's position. A high-Fowler's position causes excessive hip flexion, which increases the risk of prosthetic dislocation after hip arthroplasty. Hip flexion should generally not exceed 90 degrees postoperatively. B. Keep an abduction pillow between the client's legs. An abduction pillow maintains the leg in proper alignment and prevents internal rotation and adduction, which are common mechanisms of hip dislocation after surgery. It is a key intervention in protecting the surgical joint. C. Elevate the client's affected leg on a pillow when in bed. Elevating the leg is appropriate for reducing swelling, but if not done correctly, it can cause improper hip positioning. It does not prevent dislocation unless combined with other alignment strategies. D. Position the client's knees slightly higher than the hips when up in a chair. This position promotes hip flexion greater than 90 degrees, which increases the risk of dislocating the hip prosthesis. The hips should remain higher than the knees to prevent excessive flexion.