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. 2022 Aug 25;14(3):37576.
doi: 10.52965/001c.37576. eCollection 2022.

Bovine-derived xenograft is a viable bone graft substitute in multilevel, instrumented, spinal fusion

Max Prost  1 , Jochaim Windolf  1 , Markus Rafael Konieczny  1
Affiliations

Bovine-derived xenograft is a viable bone graft substitute in multilevel, instrumented, spinal fusion

Max Prost et al. Orthop Rev (Pavia). .

Abstract

Objective: To evaluate radiological outcomes following the use of xenogeneic bone graft substitute (BGS) in patients undergoing multisegmental spinal fusion.

Summery of background data: Data exists for single level and short segment fusions, there presently is a paucity of data on fusion rate after bone augmentation with BGS in multisegmental posterior spinal fusion (PSF). The leading concern is pseudarthrosis, which often leads to a loss of correction after PSF. Therefore, the bone graft is an essential aspect of PSF.

Methods: We retrospectively analysed the radiological data of a consecutive cohort of patients who had been treated for adolescent idiopathic scoliosis (AIS) via multisegmental spinal fusion, in whom a bovine derived BGS had been used and had a complete dataset of 24 months follow-up. The Cobb angle of the main curve was measured pre-operatively and then at 6, 12 and 24 months post-operatively. Loosening of the screws was recorded at the same post-operative time points.

Results: After applying inclusion and exclusion criteria, 28 patients were included. We found no significant change of the cobb angle from the main curve as well as the cobb angle from the thoracic kyphosis during the 24 months of follow up. No patient showed a lack of bony fusion. There was 1 revision surgery, which was due to trauma.

Conclusion: In this cohort, all patients showed successful bone fusion during a 24-month follow-up. Additionally, there was no change in the Cobb angle during the 2-year post-operative period. Our data indicates that the use of bovine-derived BGS supports bone fusion after multisegmental posterior instrumented fusion of the spine.

Keywords: adolescent idiopathic scoliosis; bone-graft; selective spinal fusion; spine deformity; spine surgery.

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Conflict of interest statement

MRK reports personal fees from Globus Medical, outside the submitted work. The other authors declare no conflict of interest relevant to this work.

Figures

Figure 1.
Figure 1.. The values of the Cobb angle over time.
See this image and copyright information in PMC

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