Clinical orthopaedics and related research
-
Clin. Orthop. Relat. Res. · Jul 2012
Which radiographic parameters are linked to failure of a dynamic spinal implant?
Knowledge about factors leading to failure of posterior dynamic stabilization implants is essential to design future implants and establish surgical indications. Therefore, we analyzed an implant for single-level or hybrid configuration (adjacent to spondylodesis), which was recalled due to high failure rates. ⋯ Implant translation is associated with failure likely due to insufficient resistance to shear forces. Load transfer may cause progressive degeneration in the dynamic and adjacent segments, especially in the hybrid configuration.