CYCLIC CONTROLLED DYNAMIC DEVICE FOR THE CORRECTION OF SPINAL DEFORMITIES

摘要

A fusionless instrumentation suited for providing initial and long term correction of spinal deformities through the use of combined controlled dynamic recurrent sequences of compression and distraction and mechanical bone growth modulation, respectively. The device seeks to provide controlled dynamic compression to the targeted growth plate over the convexity of a spinal deformity alone or combined with posterior controlled dynamic distraction to the growth plate over contralateral side of the deformity. In turn, this will retard local growth on the convexity of the curve where compression is applied and will accelerate local growth on the concavity of the curve where distraction is applied, resulting in the reduction, elimination, or reversal of vertebral wedging and, consequently, realignment of the spine, using more physiological (controlled dynamic) loadings that allow improved growth modulation, as compared to current fusionless devices which are based on static/non-cyclic principles.