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More Anterior Bone Loss In Middle Vertebra After Contiguous Two-Segment Cervical Disc Arthroplasty – Cervical Disc Replacement

The article discusses a study on the morphological changes in three vertebral bodies following contiguous two-segment cervical disc arthroplasty (CDA). The study included 78 patients who underwent the procedure and found that only the middle vertebra showed significant changes in sagittal area, with other endplates experiencing early loss in length. Clinical outcomes significantly improved, but there was a higher incidence of heterotopic ossification and anterior bone loss at the last follow-up. The study concluded that careful consideration of these changes, particularly in the middle vertebra, is necessary before and during surgery. Keywords include anterior bone loss, cervical disc arthroplasty, heterotopic ossification, sagittal area, and vertebral body

Summarised by Mr Mo Akmal – Lead Spinal Surgeon
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Published article

Our findings indicated that after contiguous two-segment CDA, middle vertebra had a distinguishing morphological changing pattern that could be due to ABL, which deserves careful consideration before and during surgery.

Cervical Disc Arthroplasty Surgery Expert. Best Spinal Surgeon UK
Abstract Background: Contiguous two-segment cervical disc arthroplasty (CDA) is safe and effective, while post-operative radiographic change is poorly understood. We aimed to clarify the morphological change of the three vertebral bodies operated on. Methods: Patients admitted between 2015 and 2020 underwent contiguous two-level Prestige LP CDA were included. The follow-up was divided into immediate post-operation,

Abstract

Background: Contiguous two-segment cervical disc arthroplasty (CDA) is safe and effective, while post-operative radiographic change is poorly understood. We aimed to clarify the morphological change of the three vertebral bodies operated on.

Methods: Patients admitted between 2015 and 2020 underwent contiguous two-level Prestige LP CDA were included. The follow-up was divided into immediate post-operation (≤ 1 week), early (≤ 6 months), and last follow-up (≥ 12 months). Clinical outcomes were measured by Japanese Orthopedic Association (JOA) score, visual analogue score (VAS), and neck disability index (NDI). Radiographic parameters on lateral radiographs included sagittal area, anterior-posterior diameters (superior, inferior endplate length, and waist length), and anterior and posterior heights. Sagittal parameters included disc angle, Cobb angle, range of motion, T1 slope, and C2-C7 sagittal vertical axis. Heterotopic ossification (HO) and anterior bone loss (ABL) were recorded.

Results: 78 patients were included. Clinical outcomes significantly improved. Of the three operation-related vertebrae, only middle vertebra decreased significantly in sagittal area at early follow-up. The four endplates that directly meet implants experienced significant early loss in length. Sagittal parameters were kept within an acceptable range. Both segments had a higher class of HO at last follow-up. More ABL happened to middle vertebra. The incidence and degree of ABL were higher for the endplates on middle vertebra only at early follow-up.

Our findings indicated that after contiguous two-segment CDA, middle vertebra had a distinguishing morphological changing pattern that could be due to ABL, which deserves careful consideration before and during surgery.

Keywords: Anterior bone loss; Cervical disc arthroplasty; Heterotopic ossification; Sagittal area; Vertebral body.

The London Spine Unit : best rated spine hospital in the world

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More anterior bone loss in middle vertebra after contiguous two-segment cervical disc arthroplasty

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Abstract Background: Contiguous two-segment cervical disc arthroplasty (CDA) is safe and effective, while post-operative radiographic change is poorly understood. We aimed to clarify the morphological change of the three vertebral bodies operated on. Methods: Patients admitted between 2015 and 2020 underwent contiguous two-level Prestige LP CDA were included. The follow-up was divided into immediate post-operation

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