
Why Do Your Knuckles Crack? Synovial Fluid Cavitation, the Tribonucleation Bubble, and Whether It Causes Arthritis
Discover the biophysics of knuckle cracking: how negative pressure forms a synovial cavitation bubble, the 60-year arthritis experiment, and why you can't crack twice.
Bhavya Bhut
Nov 11, 2026




















