Article Figures & Data
Figures
- Fig. 1
(A) Graphical illustration of the artificial cervical disc (M6-C artificial cervical disc, Spinal Kinetics, Sunnyvale, CA). (B) Cut-away image of the disc illustrating a compressible polymer core to simulate the nucleus surrounded by woven fibers arranged circumferentially to simulate the annulus.
- Fig. 2
Mean Neck Disability Index (NDI) values pretreatment and at each follow-up interval for all patients (N = 25) as well as for patients with ≤48 months of symptoms (n = 21).
- Fig. 3
Mean arm (A) and neck (B) pain severity values pretreatment and at each follow-up interval.
- Fig. 4
Mean ROM values at the treated level (A) and globally for the entire neck (B) pretreatment and at each follow-up interval.
- Fig. 5
Mean disc height values pretreatment and at each follow-up interval.
- Fig. 6
Representative lateral radiographs illustrating a single level (A) and a 2-level (B) cervical disc replacement.
Tables
Characteristics Value (N = 25) Age, mean ± SD, 44.5 ± 10.1 Female, n(%) 23 (92.0) Duration of non-operative treatment, mean ± SD, mo 23.2 ± 16.6 Number of treated levels, n(%) One 12 (48.0) Two 13 (52.0) Implant levels,* n(%) C3-4 1 (2.6) C4-5 10 (26.3) C5-6 18 (47.4) C6-7 9 (23.7) Previous treatment(s), n(%) Cervical traction 6 (24.0) Bed rest/immobilization 3 (12.0) Use of NSAIDS 25 (100.0) Cervical collar 11 (44.0) Physical therapy 21 (84.0) Chiropractic care 9 (36.0) Acupuncture 7 (28.0) Smokers, n(%) 13 (52.0) ↵* N = 38.
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