Table 1.
The SINS classification according to Fisher et al. [[4]]
| Score | |
|---|---|
|
Location |
|
| Junctional (occiput-C2, C7-T2, T11-L1, L5-S1) |
3 |
| Mobile spine (C3-C6, L2-L4) |
2 |
| Semirigid (T3-T10) |
1 |
| Rigid (S2-S5) |
0 |
|
Pain
*
|
|
| Yes |
3 |
| Occasional pain but not mechanical |
1 |
| Pain-free lesion |
0 |
|
Bone lesion |
|
| Lytic |
2 |
| Mixed (lytic/blastic) |
1 |
| Blastic |
0 |
|
Radiographic spinal alignment |
|
| Subluxation/translation present |
4 |
| De novo deformity (kyphosis/scoliosis) |
2 |
| Normal alignment |
0 |
|
Vertebral body collapse |
|
| > 50% collapse |
3 |
| < 50% collapse |
2 |
| No collapse with > 50% body involved |
1 |
| None of the above |
0 |
|
Posterolateral involvement of spinal elements
†
|
|
| Bilateral |
3 |
| Unilateral |
1 |
| None of the above | 0 |
*Pain improvement with recumbency and/or pain with movement/loading of spine.
†Facet, pedicle, or costovertebral joint fracture or replacement with tumor.