Table 5 Severity of knee abnormalities in subjects stratified by age group. Severity presented as median (interquartile range) for subjects with any abnormality, i.e. WORMS score ≥ 1, for each feature. P-values are from Mann-Whitney U tests of scores from all subjects in each age group
From: MRI findings of knee abnormalities in adolescent and adult volleyball players
Baseline | Follow-up | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Adolescents (n = 18) | Adults (n = 18) | Adolescents (n = 18) | Adults (n = 18) | |||||||
n | Severity | n | Severity | p-value | n | Severity | n | Severity | p-value | |
Cartilage abnormalities | 0 | – | 12 | 3 (2.5, 5) | – | 0 | – | 13 | 3 (3, 5) | – |
Bone marrow lesions | 4 | 1 (1, 3) | 8 | 2 (1, 2) | 0.107 | 3 | 1 (1, 1.5) | 11 | 2 (1, 2.5) | 0.005 |
Subarticular cysts | 2 | 1 (1, 1) | 5 | 2 (1, 2) | 0.169 | 2 | 1 (1, 1) | 5 | 2 (1, 2) | 0.169 |
Osteophytes | 16 | 1 (1, 2) | 18 | 3 (2, 5) | <0.001 | 16 | 2 (1, 2) | 18 | 2.5 (2, 5) | <0.001 |
Ligamentous lesions | 0 | – | 2 | 1 (1, 1) | 0.151 | 0 | – | 2 | 1 (1, 1) | 0.151 |
Meniscal lesions | 5 | 1 (1, 1) | 10 | 2 (2, 3) | 0.021 | 5 | 1 (1, 1.3) | 11 | 2 (2, 3.5) | 0.015 |