Table 3 Morphological and radiological cyst characteristics in the study group
From: Predictive characteristic of simple bone cyst treated with curettage and bone grafting
Positive response | Recurrence | Test value | p -value | |
|---|---|---|---|---|
Sample size | 14 | 10 | ||
Cyst location | ||||
Humerus, n (%) | 1 (7.14) | 5 (50.0) | χ2 = 9.351 | p < 0.05 |
Femur, n (%) | 6 (42.86) | 5 (50.0) | ||
Tibia, n (%) | 2 (14.29) | 0 | ||
Other localistaion [calcaneus phalanx], n(%) | 5 (35.71) | 0 | ||
Cyst location: shaft/metaphysis | ||||
Metaphysis, n (%) | 7 (50.0) | 7 (70.0) | p = 0.210 | |
Shaft, n (%) | 7 (50.0) | 3 (30.0) | ||
Cyst activity | ||||
Active cyst, n (%) | 4 (28.57) | 3 (30.0) | p = 0.347 | |
Latent cyst, n (%) | 10 (71.43) | 7 (70.0) | ||
Number of cavities | ||||
Uninocular, n (%) | 9 (64.29) | 3 (30.0) | p = 0.089 | |
Mulitlocular, n (%) | 5 (35.71) | 7 (70.0) | ||
Pathological fractures at the time of diagnosis | ||||
Yes, n (%) | 4 (28.57) | 8 (80.0) | p = 0.017 | |
No, n (%) | 10 (71.43) | 2 (20.0) | ||
Enneking stage | ||||
IA, n (%) | 11 (78.57) | 5 (50.0) | p = 0.089 | |
IB, n (%) | 3 (21.43) | 4 (40.0) | ||
IC, n (%) | 0 | 1 (10.0) | ||
Radiological parameters | ||||
Mean cyst area, cm2 (SD) | 9.99 (7.36) | 22.59 (11.55) | z = 3.121 | p < 0.01 |
Mean cyst index of Kaelin and MacEwen (SD) | 10.14 (9.74) | 19.79 (10.54) | z = 2.213 | p < 0.05 |
Mean cyst diameter ratio (SD) | 2.16 (1.72) | 3.92 (2.01) | z = 2.202 | p < 0.05 |
Mean minimal cortical thickness, mm2 (SD) | 0.25 (0.01) | 0.19 (0.14) | z = 1.202 | p > 0.05 |
Mean ratio of the minimal cortical thickness to the cortical thickness in the diaphysis (SD) | 0.61 (0.25) | 0.41 (0.27) | z = 1.784 | p > 0.05 |