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Magnetic Controlled Growing Rods as a Treatment of Early Onset Scoliosis: Early Results With Two Patients.
Spine 2016 November 16
STUDY DESIGN: Prospective unicentral nonrandomized study.
OBJECTIVE: To evaluate the safety and effectivity profile of magnetic controlled growing rods (MCGR) in patients with early onset scoliosis (EOS).
SUMMARY OF BACKGROUND DATA: Conventional growing rods are the most commonly used growth sparring devices in the treatment of EOS, as this technique requires repeated surgical operations for lengthening; it is associated with high rate of complications and increased costs. MCGR in treatment of EOS is effective in correcting deformity whereas allowing continuous spinal growth as reported by a few studies.
METHODS: 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 analyzed in terms of Cobb angle, kyphosis angle, T1-T12, and T1-S1 distances in preoperative, postoperative, and last follow up.
RESULTS: The mean preoperative Cobb and kyphosis angle were 68° (44-116°) and 43° (98-24°), it was corrected to 35° (67-12°) and 29° (47-21°) immediately after initial operation and maintained at 34.5° (52-10°) and 33° (52-20°) at last follow up, respectively.The mean preoperative T1-T12 and T1-S1 distance were 171 mm (202-130 mm) and 289 mm (229-370 mm), it was increased to 197 mm (158-245 mm) and 330 mm (258-406mm) immediately after initial operation and further increased to 215 mm (170-260 mm) and 357 mm (277-430 mm) at last follow up, respectively.Two patients had undergone final fusion, they had overall mean Cobb angle correction of 66° (62-70°), and kyphosis angle change of 53° (26-80°). Total height gain in T1-T12 and T1-S1 of 80.5 mm (67-94 mm) and 119 mm (105-133 ), respectively.
CONCLUSION: 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.
LEVEL OF EVIDENCE: 3.
OBJECTIVE: To evaluate the safety and effectivity profile of magnetic controlled growing rods (MCGR) in patients with early onset scoliosis (EOS).
SUMMARY OF BACKGROUND DATA: Conventional growing rods are the most commonly used growth sparring devices in the treatment of EOS, as this technique requires repeated surgical operations for lengthening; it is associated with high rate of complications and increased costs. MCGR in treatment of EOS is effective in correcting deformity whereas allowing continuous spinal growth as reported by a few studies.
METHODS: 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 analyzed in terms of Cobb angle, kyphosis angle, T1-T12, and T1-S1 distances in preoperative, postoperative, and last follow up.
RESULTS: The mean preoperative Cobb and kyphosis angle were 68° (44-116°) and 43° (98-24°), it was corrected to 35° (67-12°) and 29° (47-21°) immediately after initial operation and maintained at 34.5° (52-10°) and 33° (52-20°) at last follow up, respectively.The mean preoperative T1-T12 and T1-S1 distance were 171 mm (202-130 mm) and 289 mm (229-370 mm), it was increased to 197 mm (158-245 mm) and 330 mm (258-406mm) immediately after initial operation and further increased to 215 mm (170-260 mm) and 357 mm (277-430 mm) at last follow up, respectively.Two patients had undergone final fusion, they had overall mean Cobb angle correction of 66° (62-70°), and kyphosis angle change of 53° (26-80°). Total height gain in T1-T12 and T1-S1 of 80.5 mm (67-94 mm) and 119 mm (105-133 ), respectively.
CONCLUSION: 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.
LEVEL OF EVIDENCE: 3.
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