Abstract
Background: Anterior cervical discectomy and fusion surgery is a common procedure for degenerative cervical spine. This describes allospacer and implant-related outcomes, comparing medium plate–low screw angle and short plate–high screw angle techniques. Methods: From January 2016 to June 2019, 79 patients who underwent ACDF were prospectively enrolled. Patients were divided, depending on the plate–screw system used: medium plate–low screw angle (12.3 ± 2.5 to 13.2 ± 3.2 degrees), and short plate–high screw angle (22.8 ± 5.3 to 23.3 ± 4.7 degrees). Subsidence, ALOD, and sagittal cervical balance were analyzed using lateral cervical X-rays. NDI and VAS scores were also evaluated. Results: Age for medium plate–low-angled screw group is 58.0 ± 11.3 years, and 55.3 ± 12.0 in the short plate–high-angled screw group (p-value = 0.313). Groups were comparable in mean NDI (p-value = 0.347), VAS (p-value = 0.156), C2–C7 SVA, (p-value = 0.981), and lordosis angle (p-value = 0.836) at 1-year post-surgery. Subsidence was higher in the medium plate–low-angled screw than in the short plate–high-angled screw (25% and 8.5%, respectively, p-value = 0.045). ALOD is also more common in the medium plate group (p-value = 0.045). Conclusion: Use of a short plate and insertion of high-angled screws (more than 20 degrees) has less chance of subsidence and occurrence of ALOD than the traditional technique of using medium plate and low angle.
Highlights
Anterior Cervical Discectomy and Fusion (ACDF) is a common surgical procedure performed for degenerative cervical conditions [1]
This study investigated allospacer, and implantrelated outcomes, comparing the medium plate-low screw angle, and short plate–high screw angle techniques, in patients who underwent ACDF
Patients who had the short plate were diagnosed with Cervical spondylotic myeloradiculopathy (CSMR) (48.9%), ossified posterior longitudinal ligament (OPLL) (6.4%), and HCD (44.7%)
Summary
Anterior Cervical Discectomy and Fusion (ACDF) is a common surgical procedure performed for degenerative cervical conditions [1]. It has been used for treatment of both myelopathy and radiculopathy with compression mainly on the anterior [2,3]. ACDF is one of the most commonly used surgical treatments for degenerative spine conditions It is considered a safe procedure, with a low mortality rate. Anterior cervical discectomy and fusion surgery is a common procedure for degenerative cervical spine. This describes allospacer and implant-related outcomes, comparing medium plate–low screw angle and short plate–high screw angle techniques. Results: Age for medium plate–low-angled screw group is 58.0 ± 11.3 years, and
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