单选题 The nurse is caring for a client who underwent a total hip replacement. What should the nurse and other caregivers do to prevent dislocation of the new prosthesis ？（）

A、 Keep the affected leg in a position of adduction.
B、 Use measures other than turning to prevent pressure ulcers.
C、 Prevent internal rotation of the affected leg.
D、 Keep the hip flexed by placing pillows under the client's knee.

【正确答案】 C

【答案解析】External rotation and abduction of the hip helps to prevent dislocation of a new hip joint. Internal rotation and adduction should be avoided. Postoperative total hip replacement clients may be turned onto the unaffected side. While the hip may be flexed slightly, it shouldn't exceed 90 degrees and maintenance of flexion isn't necessary.