Distribution of medulla-to-canal ratios (MCRs) measured in asymptomatic professional rugby players (n = 127) using static MRI during the 2002–2003 and 2003–2004 seasons
| Normal (<0.6) (%) | Abnormal | ||
|---|---|---|---|
| Intermediate (0.6≤MCR<0.7) (%) | At risk (≥0.7) (%) | ||
| <21 years old (n = 57) | 37 (65) | 12 (21) | 8 (14) |
| ≥21 years old (n = 70) | 46 (66) | 10 (14) | 14 (20) |