Growing rod technique with prior foundation surgery and sublaminar taping for early-onset scoliosis

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  • 1 Department of Orthopaedic Surgery, Dokkyo Medical University, Mibu;
  • 2 Department of Orthopaedic Surgery, Gotenyama Hospital, Kanuma; and
  • 3 Department of Orthopaedic Surgery, Kamitsuga General Hospital, Kanuma, Tochigi, Japan
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OBJECTIVE

The aim of this study was to show the surgical results of growing rod (GR) surgery with prior foundation surgery (PFS) and sublaminar taping at an apex vertebra.

METHODS

Twenty-two early-onset scoliosis (EOS) patients underwent dual GR surgery with PFS and sublaminar taping. PFS was performed prior to rod placement, including exposure of distal and proximal anchor areas and anchor instrumentation filled with a local bone graft. After a period of 3–5 months for the anchors to become solid, dual rods were placed for distraction. The apex vertebra was exposed and fastened to the concave side of the rods using sublaminar tape. Preoperative, post–GR placement, and final follow-up radiographic parameters were measured. Complications during the treatment period were evaluated using the patients’ clinical records.

RESULTS

The median age at the initial surgery was 55.5 months (range 28–99 months), and the median follow-up duration was 69.5 months (range 25–98 months). The median scoliotic curves were 81.5° (range 39°–126°) preoperatively, 30.5° (range 11°–71°) after GR placement, and 33.5° (range 12°–87°) at the final follow-up. The median thoracic kyphotic curves were 45.5° (range 7°–136°) preoperatively, 32.5° (range 15°–99°) after GR placement, and 42° (range 11°–93°) at the final follow-up. The median T1–S1 lengths were 240.5 mm (range 188–305 mm) preoperatively, 286.5 mm (range 232–340 mm) after GR placement, and 337.5 mm (range 206–423 mm) at the final follow-up. Complications occurred in 6 patients (27%). Three patients had implant-related complications, 2 patients had alignment-related complications, and 1 patient had a wound-related complication.

CONCLUSIONS

A dual GR technique with PFS and sublaminar taping showed effective correction of scoliotic curves and a lower complication rate than previous reports when a conventional dual GR technique was used.

ABBREVIATIONS EOS = early-onset scoliosis; GR = growing rod; PFS = prior foundation surgery.

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Contributor Notes

Correspondence Satoshi Inami: Dokkyo Medical University, Tochigi, Japan. iinami@dokkyomed.ac.jp.

INCLUDE WHEN CITING Published online June 26, 2020; DOI: 10.3171/2020.4.SPINE2036.

Disclosures Dr. Taneichi reports support of non–study-related clinical or research efforts that he oversees from Stryker and Medtronic.

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