Augmentation With Cortoss Improves Vertebral Body Compression Biomechanics for Lumbar Total Disc Replacement

Endplate subsidence and vertebral body (VB) fracture are potential complications following lumbar total disc replacement (TDR) [1]. Early clinical evidence suggests that these events can be ameliorated in patients with osteopenia and osteoporosis by vertebral augmentation performed at the time of TDR [2]. However, the biomechanical basis to support vertebral augmentation of TDR has not been established. The objective of this study was to quantify the effects of vertebral augmentation with Cortoss on VB mechanics under compression by a TDR implant. We hypothesize that augmentation with Cortoss will improve the mechanical behavior in compression.