Table 3.
Review of the literature regarding outcomes in patients with untreated asymptomatic ONFH.
| Authors | Year | Number of hips | Length of follow-up (years) | Symptomatic progression (%) | Collapse (%) |
|---|---|---|---|---|---|
| Kang et al | 2013 | 68 | 2.27 | 55.9 | Not reported |
| Min et al | 2008 | 81 | 8.3 | 38.3 | 32.1 |
| Nam et al | 2008 | 105 | 8.58 | 59.0 | Not reported |
| Hernigou et al | 2006 | 121 | 14 | 91.0 | 77.0 |
| Hernigou et al | 2004 | 40 | 11.5 | 88.0 | 73.0 |
| Yoshida et al | 2002 | 24 | 4.25 | 29.0 | 4.0 |
| Jergessen et al | 1997 | 19 | 2.96 | 74.0 | 42.0 |
| Sugano et al | 1994 | 149 | 5.2 | Not reported | 80.5 |
| Takatori et al | 1993 | 32 | 0.9 | Not reported | 44.0 |
| Ohzono et al | 1992 | 115 | 5.25 | Not reported | 67.8 |
| Our data | 2017 | 59 | 4.38 | 8.5 | 22.0 |
ONFH = osteonecrosis of the femoral head.