Simultaneous double-rod rotation technique in posterior instrumentation surgery for correction of adolescent idiopathic scoliosis

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The authors present a new posterior correction technique consisting of simultaneous double-rod rotation using 2 contoured rods and polyaxial pedicle screws with or without Nesplon tapes. The purpose of this study is to introduce the basic principles and surgical procedures of this new posterior surgery for correction of adolescent idiopathic scoliosis. Through gradual rotation of the concave-side rod by 2 rod holders, the convex-side rod simultaneously rotates with the the concave-side rod. This procedure does not involve any force pushing down the spinal column around the apex. Since this procedure consists of upward pushing and lateral translation of the spinal column with simultaneous double-rod rotation maneuvers, it is simple and can obtain thoracic kyphosis as well as favorable scoliosis correction. This technique is applicable not only to a thoracic single curve but also to double major curves in cases of adolescent idiopathic scoliosis.

Abbreviations used in this paper: AIS = adolescent idiopathic scoliosis; SDRRT = simultaneous double-rod rotation technique.
Article Information

Contributor Notes

Address correspondence to: Manabu Ito, M.D., Ph.D., Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita-15Jo, Nishi-7Chome, Kita-ku, Sapporo 060-8638, Japan. email: maito@med.hokudai.ac.jp.
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