Certified Neuroscience Registered Nurse (CNRN) Practice Exam

What is the best way to prevent the development of peroneal nerve palsy in a recently immobilized patient?

1. Avoiding pressure to the back of the knees

2. Regular movement of the foot

3. Electrical stimulation of the nerve

4. Use of knee immobilizers

The correct answer is: Avoiding pressure to the back of the knees

Avoiding pressure to the back of the knees is a key strategy for preventing the development of peroneal nerve palsy in a recently immobilized patient. The peroneal nerve runs closely along the lateral aspect of the knee and can be vulnerable to compression, especially in immobilized individuals who may be resting against a hard surface or in a position that exerts pressure on the nerve. Maintaining proper positioning and avoiding any compressive forces is crucial to mitigate the risk of injury to the nerve. While regular movement of the foot can promote circulation and prevent stiffness, it might not be sufficient to specifically lower the risk of peroneal nerve palsy if pressure injuries are not also addressed. Electrical stimulation of the nerve is generally not a first-line preventive measure for nerve palsy and is typically used in the context of rehabilitation rather than prevention. The use of knee immobilizers can be necessary for certain conditions; however, they can inadvertently lead to pressure on the nerve if not monitored for positioning and pressure points. Thus, careful attention to avoiding compression at the back of the knees emerges as the most effective preventive strategy.