Comparison of Habitual Knuckle Cracking Duration (Any Frequency) with Duration of Hand Osteoarthritis (OA) Symptoms Using Paired Samples t Test
| Joint (n) | Duration of OA Symptoms (Years) | Duration of KC (Years) | P |
|---|---|---|---|
| DIP (7) | 7.6 | 27.1 | .006 |
| PIP (19) | 9.7 | 25.1 | .001 |
| MCP (15) | 7.9 | 23.1 | .003 |
| 1CMC (3) | 8.0 | 33.3 | .091 |
OA, osteoarthritis; DIP, distal interphalangeal; PIP, proximal interphalangeal; MCP, metacarpophalangeal; 1CMC, first carpometacarpal; KC, knuckle cracking.