Magnetic Controlled Growing Rods (MCGR) As a Treatment of Early Onset Scoliosis (EOS): Early Results With Two Patients Had been Fused.

Abstract Prospective unicentral non-randomized study OBJECTIVE.: To evaluate the safety, effectivity profile of magnetic controlled growing rods (MCGR) in patients with early onset scoliosis (EOS). Conventional growing rods are the most commonly used growth sparring devices in the treatment of EOS, since this technique requires repeated surgical operations for lengthenings it is associated with high rate of complications and increased costs. MCGR in treatment of EOS is effective in correcting deformity while allowing continuous spinal growth, this was reported recently by few studies. A total of 18 patients with progressive EOS were treated by MCGR, two of them had undergone final fusion operation. Patients were followed-up for a minimium time of 9 months from the time of initial surgery. Radiological data were analysed in terms of cobb angle, kyphosis angle, T1-T12 and T1-S1 distances in preoperative, postoperative and last follow up. The mean preoperative Cobb and kyphosis angle were 68° (44-116°), 43° (98-24°), it was corrected to 35° (67-12°), 29° (47-21°) immediately after initial operation and maintained at 34.5° (52-10°), 33° (52-20°) at last follow up, respectively.The mean preoperative T1-T12 and T1-S1 distance were 171mm (202-130mm), 289mm (229-370mm), it was increased to 197mm (158-245mm), 330mm (258-406mm) immediatley after initial operation and further increased to 215mm (170-260mm), 357mm (277-430mm) at last follow up, respectively.Two patients had undergone final fusion, they had overall mean Cobb angle correction of 66° (62-70°), kyphosis angle change of 53° (26-80°). Total height gain in T1-T12 and T1-S1 of 80.5mm (67-94) and 119mm (105-133) respectively. MCGR is safe and effective technique in correction of EOS deformity and in maintaining the correction during nonsurgical distraction procedures. A further correction of the deformity and more spinal height gain can be achieved in the final fusion operation. 3.