Demographics of Spinal Disc Arthroplasty: 2026 Supplementary Report

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Abstract
The 2026 Demographics of Spinal Disc Arthroplasty Supplementary Report is based on the analysis of 14,733 spinal disc procedures recorded by the Registry with a procedure date up to and including 31 December 2025. This supplementary report provides summary data and demographic information on spinal disc replacement surgery. Data are broken down into the five classes of spinal disc replacement: spinal segment, spinal ball trough, insert and endplate, cervical intervertebral disc and lumbar intervertebral disc. Revision rates are not provided for spinal disc replacement. The Spinal Disc Arthroplasty Report is one of 14 supplementary reports to complete the AOANJRR Annual Report for 2026. Information on the background, purpose, aims, benefits and governance of the Registry can be found in the Introductory chapter of the 2026 Hip, Knee and Shoulder Arthroplasty Annual Report . The Registry data quality processes, including data collection, validation and outcome assessment, are provided in detail in the Data Quality chapter of the 2026 Hip, Knee and Shoulder Arthroplasty Annual Report: https://registry.aoa.org.au/annual-reports-2026.