| Author (Year) - Nail group | Mean duration of surgery (mins) | t-value(p-value) |
| Maharjan et al. (2021) - Solid - Hollow | 82 94.8 | −0.704 (0.541) |
| Nambiar et al. (2018) - Hollow | 82 | |
| Deleanu et al. (2014) - Solid - Hollow | 43 55 |