Adjacent level ossification development after anterior cervical fusion without plate fixation

Spine
Jun-Young YangK Daniel Riew

Abstract

A retrospective. The proximity of the plate to the adjacent disc space appeared to be the critical determinant of adjacent level ossification development (ALOD) but we had no data on unplated arthrodesis. Without such data, we could not be positive that ALOD was a complication related to plates. We previously described the incidence and timing of ALOD after anterior cervical arthrodesis and plating. One hundred sixty-five patients (total 330 adjacent levels) who underwent anterior cervical arthrodesis without plate fixation by a single surgeon were reviewed. The average follow-up period was 28.8 months (2-9 years); ages ranged from 32 to 79 years (median 59.86). The presence and severity of ALOD was assessed on the lateral radiographs at 3, 6, 12, and 24 months after surgery and then annually and recorded into 4 grades. ALOD developed in 9 patients at 10 levels (5.5% of patients and 3% of levels). Eight patients had a single-level (proximal or distal) ALOD, whereas 1 patient had both ALOD. Proximal ALOD developed in 7 cases, distal in 1 case and both in 1 case. ALOD initially appeared between 6 and 12 months in all cases: 4 cases occurred at 6 months and 5 cases at 12 months. During follow-up period, the final grade of proximal...Continue Reading

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Citations

Aug 2, 2012·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Bartosz WojewnikAvinash G Patwardhan
Sep 26, 2013·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Giuseppe M V BarbagalloVincenzo Albanese
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