Table 1.
Search strings
| Dimension | Search strings |
|---|---|
| Indication | Spondylolisthesis (MH) |
| Isthmic (TW) | |
| Lytic (TW) | |
| Lumbar vertebrae (MH) | |
| Low-grade (TW) | |
| Treatment | Spinal fusion (MH) |
| Fusion (TW) | |
| Arthrodesis (MH) | |
| Spondylodesis (TW) | |
| Internal fixators (MH) | |
| Study type | Randomised controlled trial (PT) |
| Controlled clinical trial (PT) | |
| Clinical trial (PT) | |
| Multicentre studies (PT) | |
| Multicase review (PT) | |
| Trial (TW) | |
| Random* (TW) | |
| Controlled (TW) | |
| Prospective* (TW) |
PT publication type, TW free textword, MH mesh heading, wildcard used