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Classification of pulley injury severity.
| Classification of pulley lesions according to Schöffl et al.5 | |
|---|---|
| Grade 1 | Stretching or slight tearing |
| Grade 2 | A2 or A3 partial rupture, A4 complete rupture |
| Grade 3 | A2 or A3 complete rupture |
| Grade 4 | Multiple complete ruptures |
A2: annular A2 pulley; A3: annular A3 pulley; A4: annular A4 pulley.
