A nurse is caring for a client who is immobile. Which of the following interventions is appropriate to prevent contracture?

A. Placing a pillow under the knees can lead to knee flexion contractures. B. Placing a towel under the neck does not prevent contractures. C. A trochanter wedge prevents hip external rotation but does not prevent joint contractures. D. An orthotic device (e.g., foot splint) maintains proper foot alignment and prevents foot drop, a common contracture in immobile clients.