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| Prophylactic treatment | Total | |||||||||
| No treatment | Steroid injection | Steroid injection followed by oral steroid | ||||||||
| n = 33 | n = 53 | n = 29 | n = 115 | |||||||
| Longitudinal extension | ||||||||||
| < 50 mm | 75 % | (6/8) | 14 % | (1/7) | 50 % | (1/2) | 47 % | (8/17) | ||
| ≥ 50 mm | 64 % | (16/25) | 48 % | (22/46) | 41 % | (11/27) | 50 % | (49/98) | ||
| Total | 67 % | (22/33) | 43 % | (23/53) | 41 % | (12/29) | 50 % | (57/115) | ||
| P value < 50 mm vs. ≥ 50 mm | 0.69 | 0.12 | 1.0 | 1.0 | ||||||
