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. Position the client's knee slightly higher than the hips when up in a chair: This position can cause hip flexion greater than 90 degrees, increasing the risk of dislocation. Postoperative clients should keep their hips higher than their knees when sitting. B. Raise the head of the client's bed to a high-Fowlers position: High-Fowlers positioning creates excessive hip flexion, which places strain on the new prosthesis and increases the likelihood of dislocation following hip replacement surgery. C. Elevate the client's affected leg on a pillow when in bed: Elevating the leg can be appropriate for reducing swelling, but it does not prevent dislocation. Proper leg alignment is more critical than elevation in this context. D. Keep an abduction pillow between the client's legs: An abduction pillow maintains the hip in proper alignment by preventing adduction and internal rotation, which are common causes of hip prosthesis dislocation in the early postoperative period.