The painless noise in your joints or ligaments is both common and quite normal. The synovial fluid lubricates and protects the cracking joints. Over time, gases can build up in these areas which are released when the joint is being used. Thus, the pops and cracks.
Knuckle “cracking” has not been shown to be harmful or beneficial. More specifically, knuckle cracking does not cause arthritis. Joint “cracking” can result from a negative pressure pulling nitrogen gas temporarily into the joint, such as when knuckles are “cracked.” This is not harmful.
Snapping and popping of joints is common. The sound you hear is caused by air bubbles in the synovial fluid – the liquid that surrounds and lubricates your joints – and by the snapping of tightly stretched ligaments as they slide off one bony surface onto another.
Cracking knees and joints is sometimes caused by vitamin D and calcium deficiency, and sometimes dehydration. Our bodies need to be hydrated so collagen can form and lubricate around our joints. The solution: Load up on calcium citrate with vitamin D combination.