2007-05-09 14:11:29 · 17 answers · asked by o c 1 in Science & Mathematics ➔ Biology
Your bones don't, joints can though.
No one is 100% sure why it happens but some theories are at http://en.wikipedia.org/wiki/Cracking_knuckles
2007-05-09 14:14:40 · answer #1 · answered by Weatherman 7 · 0⤊ 1⤋
They release carbon dioxide from the space in between the joints, and it makes a popping sound. It's not actually bone.
2007-05-09 14:14:13 · answer #2 · answered by justlaugh93 3 · 0⤊ 0⤋
* Escaping gases: Scientists explain that synovial fluid present in your joints acts as a lubricant. The fluid contains the gases oxygen, nitrogen, and carbon dioxide. When you pop or crack a joint, you stretch the joint capsule. Gas is rapidly released, which forms bubbles. In order to crack the same knuckle again, you have to wait until the gases return to the synovial fluid.
* Movement of joints, tendons and ligaments: When a joint moves, the tendon’s position changes and moves slightly out of place. You may hear a snapping sound as the tendon returns to its original position. In addition, your ligaments may tighten as you move your joints. This commonly occurs in your knee or ankle, and can make a cracking sound.
* Rough surfaces: Arthritic joints make sounds caused by the loss of smooth cartilage and the roughness of the joint surface.
2007-05-09 14:14:44 · answer #3 · answered by Sam 2 · 1⤊ 1⤋
If you are referring to the sound your joints make when you crack them, then I have an answer for you. That sound is not caused by the bones, but is actually caused by the release of pressure from in between your joints.
2007-05-09 14:15:25 · answer #4 · answered by Anonymous · 1⤊ 1⤋
theres actually air pockets in your joints and your moving them around thru your ligaments and the pressure swiching from side to side makes the pop, and cracking/popping ur knuckles or any other bone isnt bad for you and doesnt give u arthritus
2007-05-09 14:13:51 · answer #5 · answered by D4Ni3L 2 · 2⤊ 1⤋
The popping sound when you crack your knuckles is bubbles of gas forming when pressure suddenly drops in the synovial fluid. It's a similar process to cavitation; bubbles forming when a propeller spins very fast underwater.
2007-05-09 14:19:44 · answer #6 · answered by zee_prime 6 · 2⤊ 1⤋
Nitrogen pockets feel between your bones and when you bend or stretch them you here to release from this that sounds like popping.
That is the simplest way to put it.
I hope this helped.
2007-05-09 14:20:11 · answer #7 · answered by safetyusa 6 · 1⤊ 1⤋
When they pop when say, you squat, it's the ligaments in your joints passing over one another. It's fine. Everyone's joints pop. Just because your joints pop, you don't automatically have arthritis
2007-05-09 14:17:07 · answer #8 · answered by Michelle♥ 2 · 1⤊ 1⤋
its our joints that pop not the bones
2007-05-09 14:13:57 · answer #9 · answered by rick r 4 · 1⤊ 1⤋
Gases and synovial fluid build up in our joints. When you "pop" your joints, it makes an audible sound as the fluid is released.
2007-05-09 14:14:24 · answer #10 · answered by Anonymous · 0⤊ 1⤋