I want to know how your knuckles crack when you push on them?
2006-12-09 10:02:24 · 10 answers · asked by SlIpKnOt 2 in Health ➔ General Health Care ➔ Pain & Pain Management
Escaping gases and fluid, movement and rough surfaces.
Your joints can make a variety of sounds: popping, cracking, grinding, and snapping. The joints that "crack" are the knuckles, knees, ankles, back, and neck. There are different reasons why these joints "sound off".
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.
2006-12-09 10:06:00 · answer #1 · answered by S H 6 · 2⤊ 0⤋
The "crack" sound in your knuckles when you push on them is the sound of the air between bone and cartilage being forcefully released during the motion. It is harmless and does not cause damage such as big knuckles or arthritis
Hope this helps
2006-12-09 10:06:29 · answer #2 · answered by ajappe 1 · 1⤊ 0⤋
There is a fluid-filled sac at your finger joints, designed to keep your bones from rubbing together. When you push on your knuckles you are stressing that sac. Many doctors believe that rheumatoid arthritis happens this way. I can't stand the sound. It is very annoying. STOP IT!
2006-12-09 10:06:13 · answer #3 · answered by Chris 5 · 0⤊ 1⤋
A small bubble forms between the joints and then the bubble is popped. That's what I heard once on some health show or something, anyways.
2006-12-09 10:05:03 · answer #4 · answered by kneu93 3 · 0⤊ 0⤋
its something to do with bubbles of nitrogen, or something like that, forming in your blood, and the cracking is the bubbles popping, and going back into your blood, or thats what out biology teacher told us in about year 8!
2006-12-09 10:05:31 · answer #5 · answered by Cate 4 · 1⤊ 0⤋
Gas bubbles in the synovial fluid
2006-12-09 10:06:05 · answer #6 · answered by Anonymous · 0⤊ 0⤋
The theory is air popping but no scientific proof has been found.
2006-12-09 10:07:27 · answer #7 · answered by Man 6 · 0⤊ 0⤋
when u press on ur fingers ur popping nitrogen bubbles
but u shouldn't pop em because when ur old u will have a higher risk of arthritis!
2006-12-09 10:06:05 · answer #8 · answered by ♪♫♪ 2 · 0⤊ 2⤋
something to do with built up pressure
2006-12-09 10:05:08 · answer #9 · answered by jman828 2 · 0⤊ 0⤋
cuz when you crack em' your pushin your bone outa place, but when you crack em' back they go back into place... get it?
2006-12-09 10:05:18 · answer #10 · answered by Anonymous · 0⤊ 4⤋