Paper #27: Rod lengthening with the magnetically controlled growing rod: factors influencing rod slippage and reduced gains during distractions.

This is a prospective study of magnetically controlled growing rod (MCGR) patients with particular focus on the timing of rod slippage as it pertains to rod lengthening in early onset scoliosis. Findings suggest that early rod lengthening is related to older patients and reduced distance between magnets. Diminishing length gains were observed after a period of rod usage and returns to baseline after rod exchange.