Table 1.
Demographics of 161 study participants at baseline.
| Control N = 99 | OA N = 62 | |
|---|---|---|
| Age, mean ± SD, years | 56.1 ± 8.8 | 57.1 ± 8.1 |
| Sex, % female | 100 | 100 |
| BMI, mean ± SD, kg/m2 | 24.9 ± 4.8 | 36.9 ± 5.3 |
| Kellgren and Lawrence grade | ||
| 0 | 95 | 0 |
| 1 | 4 | 0 |
| 2 | 0 | 31 |
| 3 | 0 | 31 |
| Medial meniscal abnormality, % (n) | 57% (57) | 59% (36) |
| Horizontal tear | 10% (10) | 8.2% (5) |
| Vertical tear | 1% (1) | 1.6% (1) |
| Complex tear | 2% (2) | 1.6% (1) |
| Meniscal cyst | 1% (1) | 6.6% (4) |
| Maceration | 3% (3) | 18% (11) |
| Intrameniscal signal (no tear) | 48% (48) | 42.6% (26) |
| Medial meniscal abnormality region, % (n) | ||
| Anterior | 6% (6) | 8.2% (5) |
| Body | 15% (15) | 27.9% (17) |
| Posterior | 57% (57) | 54.1% (33) |
| Lateral meniscal abnormality, % (n) | 16% (16) | 23% (14) |
| Horizontal tear | 3% (3) | 1.6% (1) |
| Vertical tear | 0 (0) | 3.3% (2) |
| Complex tear | 1% (1) | 0 (0) |
| Meniscal cyst | 1% (1) | 0 (0) |
| Maceration | 0 (0) | 1.6% (1) |
| Intrameniscal signal (no tear) | 15% (15) | 23.0% (14) |
| Lateral meniscal abnormality region, % (n) | ||
| Anterior | 15% (15) | 18% (11) |
| Body | 8% (8) | 9.8% (6) |
| Posterior | 8% (8) | 11.5% (7) |
BMI, body mass index; OA, osteoarthritis.