Why does my back crack?

Answer

According to the Library of Congress, bones crack because of the combination of escaping gases, movement of the joint and rough surfaces. Not all joints make cracking sounds. Those joints that make audible sounds include the knees, ankles, knuckles, back and neck.

The Library of Congress explains that joints contain a lubricating liquid called synovial fluid. Synovial fluid contains several dissolved gases, including oxygen, nitrogen and carbon dioxide. When a joint is bent or pulled apart, the gases in the synovial fluid escape. This is what causes the sounds made when a person cracks his back. The reason that a joint cannot be cracked repeatedly is that it takes time for the gases to replenish in the synovial fluids.

In addition to the escape of synovial fluid, arthritis causes joints to make sounds. This occurs because many arthritic joints have missing or worn-out cartilage. This makes the bones grind against each other, producing cracking or grinding noises. Tendons also cause sounds to come from a joint, according to the Library of Congress. In some joints, especially those of the knees and ankles, tendons snap back and forth, which can create a cracking sound. Medical professionals disagree as to whether repeatedly cracking joints is harmful.

Reference:
Q&A Related to "Why does my back crack?"
In order to prevent cracks, you should only mix the batter as much as your recipe says. For example, if your recipe says "mix until combined, then you should only mix until combined
http://www.ehow.com/info_8694374_cheesecake-crack....
Because you have gas and other things. When you crack it it releases it. :
http://wiki.answers.com/Q/Why_does_your_back_crack
No, frankly it doesn't do anything but really stiffin it. I have the same problem, but no worries. My knee and back and basically every body part cracks in the morning but then I'm
http://answers.yahoo.com/question/index?qid=201002...
A leaking roof is the most obvious sign that it's time to replace your roof, but it's hardly the only one. Many of these signs will eventually lead to a leaking roof, but identifying
http://www.life123.com/home-garden/building-renova...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com