The article presents the findings of a retrospective cohort study that aimed to explore the association between craniocervical sagittal balance and the clinical and radiological outcomes of cervical disc replacement (CDR). The study analyzed patients who underwent 1-level and 2-level CDR and evaluated their clinical outcomes using various scoring systems. The craniocervical sagittal alignment parameters were measured, and it was found that lower C2 slope and CGH-C7 SVA were associated with better range of motion (ROM). Higher preoperative SVA was related to the presence and progression of radiographic adjacent segment pathology (rASP). However, no significant association was observed between sagittal alignment and clinical outcomes. Keywords associated with the study include C2 slope, cervical disc replacement, craniocervical sagittal alignment, radiographic adjacent segment pathology, and sagittal vertical axis
Summarised by Mr Mo Akmal – Lead Spinal Surgeon
The London Spine Unit : best recognised treatment hospital in London
Published article
Craniocervical sagittal balance is associated with cervical lordosis and ROM at the index level after CDR. A higher preoperative SVA is related to the presence and progression of rASP. A relationship between sagittal alignment and clinical outcomes was not observed.
Cervical Disc Replacement Surgery Expert. Best Spinal Surgeon UK
Abstract Study design: Retrospective cohort study. Objective: To explore the association between craniocervical sagittal balance and clinical and radiological outcomes of cervical disc replacement (CDR). Methods: Patients who underwent 1-level and 2-level CDR were retrospectively analyzed. Clinical outcomes were evaluated using scores on the Japanese Orthopaedic Association (JOA), Visual Analogue Scale (VAS), and Neck Disability,
Abstract
Study design: Retrospective cohort study.
Objective: To explore the association between craniocervical sagittal balance and clinical and radiological outcomes of cervical disc replacement (CDR).
Methods: Patients who underwent 1-level and 2-level CDR were retrospectively analyzed. Clinical outcomes were evaluated using scores on the Japanese Orthopaedic Association (JOA), Visual Analogue Scale (VAS), and Neck Disability Index (NDI). The craniocervical sagittal alignment parameters, including the C0-C2 Cobb angle, C2-C7 Cobb angle, C2 slope, T1 slope, C2-C7 sagittal vertical axis (SVA), C1-C7 SVA, the center of gravity of the head (CGH)-C7 SVA, and range of motion (ROM) at the surgical segments were measured.
Results: A total of 169 patients were involved. Significantly lower pre- and postoperative C2 slope and CGH-C7 SVA were found in arthroplasty levels with better ROMs. Patients with a higher preoperative C2 slope and CGH-C7 SVA had lower cervical lordosis and ROM after surgery. There were no significant differences in the clinical outcomes between patients with different sagittal balance statuses. C2-C7 SVA and CGH-C7 SVA were significantly associated with radiographic adjacent segment pathology (rASP).
Craniocervical sagittal balance is associated with cervical lordosis and ROM at the index level after CDR. A higher preoperative SVA is related to the presence and progression of rASP. A relationship between sagittal alignment and clinical outcomes was not observed.
Keywords: C2 slope; cervical disc replacement; craniocervical sagittal alignment; radiographic adjacent segment pathology; sagittal vertical axis.
The London Spine Unit : best recognised treatment hospital in London
Read the original publication:
Association of Craniocervical Sagittal Alignment With the Outcomes of Cervical Disc Replacement
