Canadian Practical Nurse Registration Examination (CPNRE) Practice Exam

The function of a trochanter roll is fundamentally to serve as a positioning aid that helps prevent leg rotation, particularly in patients who are in a supine position. When a patient is lying on their back, there is a risk that the legs may rotate outward, which can lead to complications such as dislocation of the hip joint or pressure sores.

By placing the trochanter roll alongside the thighs, it stabilizes and maintains the proper alignment of the lower limbs, effectively reducing the chances of external rotation. This feature makes it crucial for maintaining the comfort and safety of patients, especially those who may have limited mobility or specific surgical recovery needs.

While some other options mention aspects related to patient care, they do not accurately reflect the primary use of a trochanter roll. For instance, it is not primarily designed to lift patients, offer comfort like a cushion, or measure limb movement. Therefore, understanding the specific function of a trochanter roll is important for practical nursing duties, ensuring effective patient positioning and prevention of complications.