| Variables | Gonads | Follow-up | Outcome | Authors |
| Fixing the testes to the scrotal skin | 28 | 6 months | 100% | Daher et al., 2009 |
| Two stages orchiopexy | 45 | 1 to 8 years | 100% | Dessanti et al., 2009 |
| Fowler-Stephens vessels ligation techinique | 24 | 10 years | 88% | K aya et al., 2006 |
| 14 | - | 83% | Esposito et al., 2009 | |
| Systematic review of 1807 citations | - | 85% | Elyas et al., 2010 | |
| 64 | 16 months | 67.6% | Stec et al., 2009 |