Table 1.
Relationship between bone growth stage and severity at the first visit to medical office or hospital
| Severity | Bone growth stage
|
||
|---|---|---|---|
| B | C | D | |
| I | 20 knees (15 boys, 5 girls) |
26 knees (20 boys, 6 girls) |
0 knees |
| II | 10 knees (9 boys, 1 girls) |
12 knees (11 boys, 1 girl) |
0 knees |
| III | 6 knees (3 boys, 3 girls) |
13 knees (10 boys, 3 girls) |
7 knees (5 boys, 2 girls) |
Note: There was a significant difference between radiographic bone stage and radiographic severity of Osgood–Schlatter disease determined by the chi-squared test (P < 0.01).