Table 4.
Surgical approaches for degenerative diseases
| Degenerative disease | No. of cases incidence (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Anterior | Posterior | Antero/posterior | |||||||
| 2011 | 2001 | 1994 | 2011 | 2001 | 1994 | 2011 | 2001 | 1994 | |
| Cervical spondylotic myelopathy/radiculopathy | 248 (7.1) | 243 (13.6) | – (21) | 3,208 (91.8) | 1528 (85.3) | – (75) | 39 (1.1) | 21 (1.2) | – (4) |
| Cervical disc herniation | 297 (47.9) | 358 (75.8) | – (52) | 308 (49.7) | 113 (23.9) | – (44) | 15 (2.4) | 1 (0.2) | – (4) |
| Cervical OPLL | 17 (11.6) | 76 (12.8) | – | 130 (88.4) | 510 (85.6) | – | 0 (0.0) | 9 (1.5) | – |
| Lumbar disc herniation | 8 (0.1) | 36 (1.0) | – (4) | 6,826 (99.8) | 3579 (98.9) | – (95) | 9 (0.1) | 3 (0.1) | – (1) |
| Lumbar spinal stenosis | 5 (0.0) | – | 10,691 (99.7) | – | – | 25 (0.2) | – | – | |
| Lumbar degenerative spondylolisthesis | 3 (0.2) | 8 (0.6) | – (13) | 1,949 (99.6) | 1343 (98.7) | – (85) | 4 (0.2) | 9 (0.7) | – (2) |
| Lumbar spondylolysis, isthmic spondylolisthesis | 0 (0.0) | 4 (1.2) | 259 (98.9) | 335 (97.4) | 3 (1.1) | 5 (1.5) | |||
| Lumbar OPLL | 0 (0.0) | – | 13 (100) | – | 0 (0.0) | – | |||
| Lumbar OLF | 0 (0.0) | – | 112 (100) | – | 0 (0.0) | – | |||
| Lumbar OPLL + OLF | 0 (0.0) | – | 8 (100) | – | 0 (0.0) | – | |||
OPLL ossification of posterior longitudinal ligament, OLF ossification of ligamentum flavum