The method of delivering chest compressions remains the same, as does the rate (at least 100 per minute). It is hoped that the use of compression-only delivery will increase the chances of the lay public delivering CPR.
Much like when crack your knuckles, loud popping noises from your knees are most likely caused by what is called cavitation. Cavitation results from a change in joint pressure that allows carbon dioxide, which is normally dissolved in your joint fluidâa.k.a.
Over time, the muscles in your knee may weaken and the entire joint structure can become unstable. Overall weakness in the knee can cause your knee to give way or buckle. The joint can also stick or lock up so you canât bend it or straighten it out when you want to.