Article Figures & Data
Figures
- Figure 1
The preoperative magnetic resonance image of a 53-year-old woman who underwent 4-level CDA. Each level from C3-4 to C6-7 showed significant disc herniation and spinal stenosis that required surgery.
- Figure 2
Postoperative flexion/extension radiographs from the patient in Figure 1 at 24 months after surgery. The range of motion at each level was well preserved. Each artificial disc was demonstrated to be well-functioning.
Tables
Patient Number N = 20 Age, y 56 ± 8 Sex, M/F 17/3 Estimated blood loss, mL 154 ± 27 Follow-up, mo 34 ± 20 Subaxial C3-7 ROM, degrees Preoperation 35 ± 8 Final follow-up 37 ± 10 P value 0.271 Individual segmental ROM, degrees C3-4 9 ± 0.9 C4-5 9 ± 0.9 C5-6 9 ± 1.0 C6-7 9 ± 1.0 C2-7 Cobb angle, degrees Preoperation 8 ± 11 Postoperation 12 ± 12 P value 0.114 C2-7 sagittal vertical axis, cm Preoperation 2.2 ± 1.3 Postoperation 2.3 ± 1.5 P value 0.804 Complications Postoperation transient C5 radiculopathy 2 (10%) Postoperation permanent C5 radiculopathy 1 (5%) Transient dysphagia 2 (10%) Poor wound healing 1 (5%) Abbreviation: ROM, range of motion.
Note: Values are presented as mean ± SD, n, or n (%).
Outcome Measure Preoperation Final Follow-up P value VAS of neck pain 4.6 ± 4.0 1.3 ± 1.8 0.021 VAS of arm pain 4.3 ± 3.6 1.0 ± 1.7 0.026 Neck Disability Index 8.2 ± 7.4 3.9 ± 3.0 0.034 Modified Japanese Orthopedic Association score 13.8 ± 1.7 15.2 ± 1.3 0.041 Abbreviation: VAS, visual analog scale.
Note: Values are presented as mean ± SD. Boldface type indicates statistical significance.
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