Which nerve should be protected when applying ice near the knee?

When applying ice near the knee, it is important to protect the peroneal nerve. This nerve runs close to the surface at the lateral aspect of the knee and can be susceptible to compression or injury if subjected to prolonged cold exposure. Ice application can lead to vasoconstriction and potentially harm the nerve if applied directly or improperly. Protecting the peroneal nerve is essential to avoid complications such as numbness or weakness in the areas it innervates, typically affecting the lower leg and foot.

The other nerves listed, such as the ulnar, tibial, and radial nerves, are not primarily associated with the knee region. The ulnar nerve runs along the inner side of the elbow, the radial nerve travels down the arm and into the hand, and the tibial nerve is located more proximally in the posterior compartment of the leg. Protecting these nerves is less of a concern when ice is being applied near the knee.