Table 3 Comparison of the head-to-head ratio and head-to-acetabulum ratio between two groups
ONFH (n = 6) | Non-ONFH (n = 24) | p-value | |
|---|---|---|---|
Uptake of femoral head | |||
Affected hip | 66.3 (53.7–79.0) | 247.6 (134.9–360.3) | 0.044 |
Unaffected hip | 201.3 (172.3–230.3) | 206.6130.9–282.3) | 0.631 |
Uptake of acetabulum | |||
Affected hip | 319.1 (219.6–418.6) | 285.7(182.9–388.7) | 0.561 |
Unaffected hip | 337.2 (217.2–457.2) | 290.2 (194.1–386.4) | 0.527 |
Head-to-head ratio | 0.33 (0.28–0.38) | 1.30 (1.03–1.57) | < 0.001 |
Head-to-acetabulum ratio | 0.22 (0.18–0.26) | 0.93 (0.72–1.14) | < 0.001 |