Relative risk of hip OA in siblings according to site of maximum joint space narrowing in their index sibling
| Site of maximum narrowing | ||||
|---|---|---|---|---|
| Indeterminate | Superior | Axial | Medial | |
| Women | ||||
| MJS ⩽2.5 mm | 4.02 (1.95 to 8.27) | 4.67 (3.08 to 7.08) | 4.35 (2.63 to 7.20) | 2.94 (1.04 to 8.29) |
| MJS ⩽1.5 mm | 6.51 (2.72 to 15.6) | 3.36 (1.80 to 6.27) | 5.81 (3.07 to 10.9) | 5.29 (1.61 to 17.4) |
| THR | 17.3 (6.27 to 47.8) | 8.37 (3.75 to 18.6) | 6.41 (2.47 to 16.6) | 3.29 (0.39 to 27.3) |
| Men | ||||
| MJS ⩽2.5 mm | 4.50 (1.56 to 13.0) | 5.74 (3.35 to 9.83) | 7.42 (3.87 to 14.1) | 7.99 (2.13 to 29.9) |
| MJS ⩽1.5 mm | 6.99 (1.83 to 26.5) | 10.2 (4.94 to 21.0) | 12.7 (5.55 to 29.0) | 8.14 (1.51 to 43.6) |
| THR | 11.9 (2.23 to 63.4) | 8.37 (3.75 to 18.6) | 6.41 (2.47 to 16.6) | 23.8 (4.06 to 140) |
| Both sexes | ||||
| MJS ⩽2.5 mm | 4.18 (2.31 to 7.56) | 4.84 (3.50 to 6.70) | 5.29 (3.56 to 7.87) | 4.20 (1.85 to 9.49) |
| MJS ⩽1.5 mm | 6.71 (3.24 to 13.8) | 5.28 (3.34 to 8.35) | 7.75 (4.70 to 12.7) | 6.14 (2.32 to 16.2) |
| THR | 15.6 (6.66 to 36.8) | 9.78 (5.19 to 18.4) | 9.60 (4.68 to 19.6) | 8.13 (2.21 to 29.9) |