Distribution of medulla-to-canal ratios (MCRs) measured in asymptomatic professional rugby players (n = 79) using static and dynamic MRI during the 2004–2005 and 2005–2006 seasons
| MCRs | Normal (>0.6) (%) | Abnormal | |
|---|---|---|---|
| Intermediate (0.6≤MCR<0.7) (%) | At risk (≥0.7) (%) | ||
| Static MRI | |||
| <21 years old (n = 25) | 19 (76) | 6 (24) | 0 |
| ≥21 years old (n = 54) | 33 (61) | 18 (33) | 3 (6) |
| All players (n = 79) | 52 (66) | 24 (30) | 3 (4) |
| Dynamic MRI | |||
| All players (n = 79) | 48 (61) | 26(33) | 5(6) |