Primary outcome of s2PD for digital nerve repair
| Primary author and year | Number of digital nerve repairs analysed | Timing of results measurement (m=months y=years) | Number of nerve repairs with s2PD 6 mm or less: Highet grade 4 | Children (age<18) included |
| Bunnell 192821 | 45 | Unknown | Unknown | Unknown |
| Shaffer and Cleveland et al 195032 | 36 | 3–12 m | Unknown | Unknown |
| Nemethi 195620 | Unknown | Unknown | Unknown | Unknown |
| Buncke 197250 | 20 | Unknown | 12 (60%) | Yes |
| Holst 197551 | Unknown | 26 m | Unknown | Yes |
| Poppen et al 197944 | 74 | 5y | 12 (16%) | Yes |
| Young et al 198147 | 34 | Unknown | 11 (32%) | Yes |
| Khuc et al 198233 | 110 | 6m | 9 (8%) | Yes |
| Sullivan 198552 | 42 | 6.5-8y | 9 (21%) | No |
| Mailander et al 198843 | 107 | 6–60 m | 25 (23%) | Unknown |
s2PD, static 2-point discrimination .