Whether it’s one or all of your knuckles, you may wonder what causes the cracking sound. Although interesting, “cracking joints” and “popping knuckles” are not fully understood.

You don't give your age, but this sounds like mild arthritis. In the early stages, the cartilage cushions that protect the joint surfaces become worn, and the joint lining can become inflamed, but ...

Do you enjoy popping your knuckles in your leisure time? This habit may be frowned upon by many, calling it an unhealthy one.