Table 4.

Visual Analogue Score (VAS), North American Spine Society (NASS), Short Form-36 Bodily Pain (SF-36 BP) and Short Form-36 Physical Functioning (SF-36 PF) scores

Functional scores	Pre-kyphoplasty	12-month post-kyphoplasty	Functional score improvements
Visual Analogue Score (VAS)	8.0	1.0	5.0
IQR	5.0–9.8	0.0–4.0	3.0 – 7.9
North American Spine Society (NASS)	4.55	2.15	1.45
IQR	3.33–5.08	1.70–3.65	0.68 – 2.90
Short Form-36 Bodily Pain (SF-36 BP)	22.0	50.5	20.5
IQR	12.0–38.8	31.0–74.0	0.0–40.8
Short Form-36 Physical Functioning (SF-36 PF)	5.5	27.5	10.0
IQR	0.0–35.0	10.0–68.7	0.0–20.0

IQR inter-quartile range

All functional score improvements were statistically significant (P < 0.01)