Biomechanical effects of cement discoplasty on the lumbar spinal unit.

In all, the biomechanical study indicates that discoplasty helps enhance the stability of the lumbar spine in flexion-extension and lateral bending, which explains how PCD works for low back pain. Fractures and sliding of bone cement were observed after discoplasty, and this was more likely to occur at the puncture channel in the annulus fibrosus region. This suggests that bone cement displacement after PCD may cause nerve compression.