Using crutches effectively is crucial for both safety and comfort. When using crutches, individuals should ensure that they are adjusted to the appropriate height. Proper fitting involves standing straight with the crutches placed under the arms. There should be a gap of about two inches between the crutches and the armpits, and handgrips should align with the wrists when the arms are relaxed. This adjustment helps prevent discomfort and injuries, such as nerve damage or strain caused by improperly fitted crutches.