In recent years, some scholars have started to make researches in improving the inner-fixed system of VDS in to treat scoliosis.
近几年，部分学者开始研究改善VDS的内固定系统治疗脊柱侧凸。
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Significant effect has been obtained in 50 cases with scoliosis by the system by ourselves developed of multi-screw fixed distractor-compressor via the vertebral pedicle from Dec. 1989 to Dec.