https://blogs.mercola.com:443/sites/vitalvotes/archive/2025/06/27/is-knee-cracking-bad-here_1920_s-what-doctors-say.aspxIf your knees crack or pop when you stand, you’re not alone. This sound, known as crepitus, is usually normal and happens when gas bubbles in joint fluid pop or tendons shift slightly. But if the popping comes with pain, stiffness, or swelling,enCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)