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.
Clicking in knees may also occur after knee surgeries, because the muscles surrounding the knee are not as strong as before due to bedrest. This difference in muscle strength may cause misalignment issues that cause knee clicking. Luckily, this typically goes away as knee strength returns.