| Authors | Year | Numbers of cases | Percentage of men (H) (%) | Percentage of women (F) (%) |
| Nich et al. [15] | 2006 | 23 | 43.4 | 56.6 |
| Archibeck et al. [16] | 2006 | 91 | 49 | 51 |
| Delaunay et al. [12] | 2008 | 73 | 79.4 | 20.6 |
| Series P32 CHUIR [14] | 2009 | 31 | 51,61 | 48,38 |
| Aldinger et al. [13] | 2009 | 141 | 48.9 | 51.1 |
| Migaud et al. [14] | 2011 | 30 | 83.3 | 16.7 |
| Hwang et al. [15] | 2011 | 70 | 81.4 | 18.6 |
| Teusink et al. [16] | 2012 | 118 | 51.7 | 48.3 |
| Takenaga et al. [17] | 2012 | 100 | 63 | 37 |
| Innmann et al. [18] | 2013 | 91 | 67 | 33 |
| Chana et al. [19] | 2013 | 110 | 47.3 | 52.7 |
| Schmitz et al. [20] | 2013 | 126 | 48.4 | 51.6 |
| Ryan et al. [12] | 2014 | 88 | 51.4 | 48.6 |
| Our series | 2015 | 43 | 39.5 | 60.47 |