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Scoring guide for assessment of the radiographic features of the Paprosky system
| Radiographic feature | Feature grading | |||
|---|---|---|---|---|
| Teardrop defect | T1 Intact |
T2 Moderate (loss of lateral border) |
T3 Severe (loss of medial border) |
|
| Ischial defect | I1 None |
I2 Mild (< 0.7 cm) |
I3 Moderate (0.7–1.4 cm) |
I4 Severe (> 1.4 cm) |
| Kohler’s line | K1 Intact |
K2 Disrupted |
||
| Superior defect | S1 Minimal |
S2 Mild (< 3 cm superior) |
S3 Moderate (< 3 cm superolateral) |
S4 Severe (> 3 cm) |
