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| Clinical findings and risk factors (RF) | Code | ||
|
| |||
| (A) Dislocated | (1) Nonreducible | A1 | |
| (2) Reducible | A2 | ||
|
| |||
| (B) Nondislocated | (1) Unstable | (1.1) Unstable after 1-2 weeks | B11 |
| (1.2) Stable after 1-2 weeks | B12 | ||
| (2) Stable | (2.1) Positive RF | B21 | |
| (2.2) Negative RF | B22 | ||
