Article Figures & Data
Figures
- Fig. 1
Lateral flexion (A) and extension (B) radiographs of the cervical spine with the test device implanted at C6-C7. The operated level was noted as being fused if intervertebral motion of less than 2° between full flexion and full extension was measured on the x-rays.
- Fig. 2
Pre-operative radiographs of patients undergoing two-level (A) and one-level (E) ACDF with the test device. Immediate postoperative AP and lateral images (B,C) and (F,G) and lateral radiograph of the two-level (D) and one-level (H) fusions taken one year after the surgery.
Tables
C3-4 C4-5 C5-6 C6-7 C7-T1 1-Level ACDFs 5 8 11 16 1 n = 41 (12.1%) (19.5%) (26.8%) (39.0%) (2.4%) Cage Size/Type # of Levels % 5.5 mm Tapered 13 17.8% 6.5 mm Tapered 34 46.6% 6.5 mm Domed 2 2.7% 7.5 mm Tapered 21 36.8% 8.5 mm Tapered 2 3.5% 9.5 mm Tapered 1 1.8% Graft Used n (cases with radiographic follow-up) # of levels 1-level procedures (# fused) 2-level procedures (# fused) # levels fused % fusion Osteocel + autograft 15 21 9 (9/9) 6 (12/12) 21 100% Grafton DBM + allograft 22 30 14 (14/14) 8 (14/16) 28 93% Allograft + autograft chips 2 2 2 (2/2) None 2 100% DBX Putty + allograft & autograft chips 3 4 2 (2/2) 1 (0/2) 2 50% Total 42 57 27 (27 levels) 15 (30 levels) 53 93% Level # of Operated Levels Pre-Operative Lordotic Angle (de-grees) (mean +/-SD) Post-Operative Lordotic Angle (degrees) (mean +/-SD) Average Increase Per Level (degrees) C3-4 10 3.6 ± 3.0 8.2 ± 2.5 4.6 C4-5 13 1.7 ± 1.9 6.0 ± 2.0 4.3 C5-6 22 0.9 ± 0.8 5.8 ± 1.4 4.9 C6-7 26 1.0 ± 1.0 5.2 ± 1.4 4.2 C7-T1 2 0.3 ± 0.4 4.8 ± 1.6 4.5 All Levels 73 1.5 ± 1.8 6.0 ± 1.9 4.5
In this issue
