Skip to main content

Table 1 Preoperative comparison between Allograft and PEEK groups

From: A comparison of contiguous two-level anterior cervical discectomy and fusion using a structural allograft versus a Polyetheretherketone (PEEK) cage: the results of a three-year follow-up

DemographicsAllograft
(n = 53)
PEEK
(n = 35)
p-value
Male27 (50.9)19 (54.3)0.759
Age (years)52.456.0 
Median (IQR)(45.2–62.1)(48.2–63.2)0.188
BMI25.025.0 
Median (IQR)(22.7–27.1)(23.1–28.2)0.617
Current smoker6 (11.5)4 (11.8)1.000
Symptom  0.335
 Radiculopathy20 (37.7)8 (22.9) 
 Myelopathy20 (37.7)17 (48.6) 
 Radiculomyelopathy13 (24.5)10 (28.6) 
Level  0.141
 C3–4/C4–53 (5.7)5 (14.3) 
 C4–5/C5–614 (26.4)12 (34.3) 
 C5–6/C6–736 (67.9)16 (45.7) 
 C3–4/C5–6*0 (0.0)1 (2.9) 
 C4–5/C6–7*0 (0.0)1 (2.9) 
Clinical baseline
 NPD31.3 ± 20.039.9 ± 26.80.111
 AAOS-NSS47.7 ± 25.949.6 ± 29.80.746
 NDI30.3 ± 20.638.9 ± 25.10.083
 VASNP4.8 ± 3.54.6 ± 3.40.751
 VASLP4.1 ± 3.92.7 ± 3.20.067
 JOA13.7 ± 1.911.3 ± 4.30.008
Radiology baseline
 Cervical cobb angle7.24 ± 11.9710.96 ± 9.800.130
Cephalic level
 Mean Disc Height3.47 ± 1.073.97 ± 1.250.048
 Segmental height31.32 ± 3.6631.57 ± 4.110.769
 Segmental Cobb angle−1.19 ± 5.832.30 ± 6.660.011
Caudad level
 Mean Disc Height3.58 ± 1.093.76 ± 1.740.575
 Segmental height32.27 ± 3.5131.10 ± 3.410.125
 Segmental Cobb angle3.41 ± 4.772.25 ± 6.060.322
  1. *Small frequency – excluded in the calculation of p-value
  2. NPD Neck pain and disability; AAOS-NSS AAOS neurogenic symptom score; NDI Neck Disability Index; VASNP Visual analog score neck pain; VASLP Visual analog score limp pain; JOA Japanese Orthopedic Association Score;