Table 1.

Spine Instability Neoplastic Score (SINS) (11).

	Score
Spine location
Junctional (occiput-C2, C7–T2, T11–L1, L5–S1)	3
Mobile spine (C3–C6, L2–L4)	2
Semi-rigid (T3–T10)	1
Rigid (S2–S5)	0
Mechanical or postural pain
Yes	3
No (occasional pain but not mechanical)	1
Pain-free lesion	0
Bone lesion quality
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 involvement
>50% collapse	3
<50% collapse	2
No collapse with >50% of the body involved	1
None of the above	0
Posterior involvement
Bilateral	3
Unilateral	1
None of the above	0