| Mean (SD) | Small joint biopsies | Large joint biopsies | |||||
|---|---|---|---|---|---|---|---|
| US –NB (n=11) | US P&F (n=11) | P value | US-NB (n=11) | US P&F (n=35) | Arthroscopic (n=10) | P value | |
| Joint biopsied | 7 wrist | 1 wrist | 10 knee | 32 knee | 10 knee | ||
| 5 MCP | 10 MCP | 3 ankle | |||||
| % graded samples per procedure | 82.3 (22.4) | 91 (10) | 0.34 | 89.8 (17.5) | 83.23 (19) | 97 (11) | 0.08 |
| Mean area of tissue (mm2) per procedure | 3.19 (1.75) | 7.95 (4.91) | <0.005* | 4.66 (3.19) | 8.8 (8.17) | 17.64 (7.56) | <0.0001* |
| Synovitis score | 4.9 (3.2) | NA | NA | 3.8 (2.6) | 4.53 (2.26) | 4.5 (1.71) | 0.35 |