Table 1.
Year of Surgery and Age of Patients.
| Characteristic | Total patients, n | ALIF/LLIF, n (%) | Combined posterior/posterolateral and interbody, n (%) | PLF, n (%) | Deformity, n (%) | Other, n (%) |
|---|---|---|---|---|---|---|
| Years | ||||||
| 2003-2005 | 21 251 | 3444 (16.2) | 20 (0.09) | 3754 (17.7) | 119 (0.56) | 20 433 (96.2) |
| 2006-2009 | 36 751 | 6836 (18.6) | 85 (0.23) | 8675 (23.6) | 221 (0.60) | 35 169 (95.7) |
| 2010-2013 | 39 038 | 5288 (13.5) | 2543 (6.5) | 9916 (25.4) | 250 (0.64) | 36 822 (94.3) |
| 2014-2017 | 20 878 | 2121 (10.2) | 2869 (13.7) | 4721 (22.6) | 113 (0.54) | 19 247 (92.2) |
| Age, years | ||||||
| Mean ± SD | 53.8 ± 12.3 | 61.3 ± 12.8 | 58.8 ± 14.1 | 48.8 ± 20.8 | 55.5 ± 14.6 | |
| 18-29 | 4413 | 401 (9.1) | 74 (1.7) | 775 (17.6) | 197 (4.5) | 3931 (89.1) |
| 30-44 | 24 899 | 3642 (14.6) | 585 (2.4) | 3709 (14.9) | 67 (0.27) | 23 600 (94.8) |
| 45-59 | 41 124 | 8090 (19.7) | 1550 (3.8) | 8752 (21.3) | 168 (0.41) | 38 988 (94.8) |
| 60+ | 47 482 | 5556 (11.7) | 3308 (7.0) | 13 830 (29.1) | 271 (0.57) | 45 152 (95.1) |
Abbreviations: ALIF, anterior lumbar interbody fusion; LLIF, lateral lumbar interbody fusion; PLF, posterior lumbar fusion.