Lumbar Total Disc Replacement Impingement Sensitivity to Disc Height Distraction, Spinal Sagittal Orientation, Implant Position, and Implant Lordosis

Spine, 05/04/2012

The data from this study indicate that lumbar mobile–bearing total disc replacement (TDR) impingement is sensitive to disc height distraction, anterior–posterior position, implant lordosis, and spinal sagittal orientation. TDR impingement risk can be minimized by choosing an implant with an appropriate amount of lordosis, not overdistracting the disc space, and taking care not to place the implant too far anterior or posterior.

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