Porous Cage Macro-Topography Improves Early Fusion Rates in Anterior Cervical Discectomy and Fusion

Table 2

Patient reported outcome scores.

Cohort	Preop neck VAS	6-week neck VAS	3-month neck VAS	6-month neck VAS	Preop vs 6-month scores ( value)	Change (%)	NM vs NMRT ( value)
NM	4.9 ± 3.0	2.7 ± 2.2	1.7 ± 2.2	1.7 ± 2.5	0.00	55.0	0.8
	(95% CI 3.98–5.82)	(95% CI 2.03–3.37)	(95% CI 1.03–2.37)	(95% CI 0.935–2.46)
NMRT	5.3 ± 2.7	2.1 ± 2.3	1.4 ± 1.9	1.4 ± 2.2	0.00	73.0
	(95% CI 4.54–6.06)	(95% CI 1.45–2.75)	(95% CI 0.862–1.94)	(95% CI 0.778–2.02)
	Preop arm VASs	6-week arm VAS	3-month arm VAS	6-month neck
NM	6.6 ± 2.9	2.6 ± 2.4	1.6 ± 2.1	1.1 ± 1.7	0.00	59.0	0.76
	(95% CI 5.71–7.49)	(95% CI 1.87–3.33)	(95% CI 0.97–2.24)	(95% CI 0.58–1.62)
NMRT	5.5 ± 2.9	1.7 ± 2.2	1.3 ± 2.2	1.2 ± 1.8	0.0002	78.0
	(95% CI 4.68–6.32)	(95% CI 1.08–2.32)	(95% CI 0.678–1.92)	(95% CI 0.961–1.71)
	Preop NDI	6-week NDI	3-month NDI	6-month NDI
NM	30.1 ± 16.3	17.5 ± 16.1	9.9 ± 8.8	7.3 ± 8.6	0.0009	76.0	0.85
	(95% CI 27.1–36.9)	(95% CI 12.6–22.4)	(95% CI 7.21–12.6)	(95% CI 4.67–9.93)
NMRT	32.0 ± 17.4	1.81 ± 17.0	10.8 ± 11.6	9.3 ± 14.4	0.004	70.0
	(95% CI 27.1–36.9)	(95% CI 13.3–22.9)	(95% CI 7.52–14.1)	(95% CI 5.23–13.4)
	Preop physical SF-12	6-week physical SF-12	3-month physical SF-12	6-month physical SF-12
NM	36.7 ± 9.1	43.6 ± 9.9	46.6 ± 7.3	47.7 ± 6.3	0.003	23.0	0.79
	(95% CI 33.9–39.5)	(95% CI 40.6–46.6)	(95% CI 44.4–48.8)	(95% CI 45.8–49.6)
NMRT	33.4 ± 10.3	43.7 ± 10.8	46.0 ± 10.9	47.2 ± 9.7	0.002	29.0
	(95% CI 30.5–36.3)	(95% CI 40.6–46.8)	(95% CI 43–49)	(95% CI 44.3–49.7)
	Preop mental SF-12	6-week mental SF-12	3-month mental SF-12	6-month mental SF-12
NM	42.9 ± 10.3	49.3 ± 8.3	49.8 ± 6.7	50.2 ± 5.9	0.001	13.0	0.33
	(95% CI 40–45.8)	(95% CI 46.8–51.8)	(95% CI 47.8–51.8)	(95% CI 48.4–52)
NMRT	45.0 ± 10.8	51.3 ± 7.96	52.9 ± 7.8	53.4 ± 8.6	0.001	16.0
	(95% CI 40–45.8)	(95% CI 49–53.5)	(95% CI 50.7–55.1)	(95% CI 51–55.8)

CI, confidence interval; NDI, Neck Disability Index; SF-12, 12-Item -Short Form Survey; VAS, visual analogue scale.