Characteristics of the patients enrolled in the study
| Variables | Tophaceous gout (n=65) | Non-gout group (n=85) | P value |
| Age (years), mean±SD | 59.94±12.40 | 61.29±11.57 | 0.492 |
| Body mass index (kg/m2), mean±SD | 28.38±5.10 | 24.42±3.17 | <0.001 |
| Smoking, n (%) | 7 (10.8) | 14 (16.5) | 0.225 |
| Alcohol consumption, n (%) | 7 (10.8) | 8 (10.4) | 0.496 |
| Fat mass/height2 (kg/m2), mean±SD | 9.73±3.80 | 6.91±1.78 | <0.001 |
| Appendicular lean mass/height2 (kg/m2), mean±SD | 7.61±1.06 | 6.77±0.81 | <0.001 |
| Lumbar spine BMD (g/cm2), mean±SD | 1.03±0.15 | 1.11±0.32 | 0.08 |
| Femur neck BMD (g/cm2), mean±SD | 0.72±0.11 | 0.68±0.10 | 0.017 |
| Total hip BMD (g/cm2), mean±SD | 0.94±0.13 | 0.89±0.13 | 0.036 |
| Knee joint space narrowing, n (%) | 30 (46.2) | 40 (47.1) | 0.522 |
| Knee osteophyte, n (%) | 16 (24.6) | 8 (9.4) | 0.011 |
BMD, bone mineral density.