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Quantitative distribution of hip pain grades in various necrosis stages.
| Stage of necrosis | Pain grading GSrade0 (%) | Grade1 (%) | Grade2 (%) | Total (%) |
|---|---|---|---|---|
| I | 24(70.59) | 9(26.47) | 1(2.94) | 34(100) |
| II | 16(27.19) | 41(69.49) | 2(3.39) | 59(100) |
| III | 18(22.22) | 23(28.40) | 40(49.38) | 81(100) |
| IV | 9(52.94) | 4(23.53) | 4(23.53) | 17(100) |
| Total | 67(35.08) | 77(40.31) | 47(24.61) | 191(100) |
