Table 2.

Pain and KPS outcomes at baseline and during follow up.

	N*	Pain or KPS Score, median (range)
NRS neck pain
Before halo frame fixation	16	8 (0–10)
After halo frame removal	17	0 (0–4)
At last follow up	17	0 (0–4)
KPS
Before halo frame fixation	20	70 (50–100)
After halo frame removal	18	80 (60–90)
At last follow up	17	80 (40–100)

NRS: Numeric rating scale, KPS: Karnofsky performance score.

*number of patients with outcome recorded.