Prediction of scoliosis correction with thoracic segmental pedicle screw constructs using fulcrum bending radiographs

Spine
Wai Yuen CheungKeith D K Luk

Abstract

A retrospective series of 35 idiopathic scoliosis patients underwent spinal fusion with a segmental thoracic pedicle screw system. To evaluate the amount of scoliosis correction with segmental pedicle screw constructs, and assess whether the fulcrum bending radiograph can predict surgical correction. The fulcrum bending radiograph is highly predictive of actual curve correction based on hook or hybrid systems. However, its predictive value in segmental pedicle screw fixation systems has not been reported. Patients diagnosed with Lenke type 1A and 1B thoracic idiopathic scoliosis who underwent posterior spinal fusion with segmental pedicle screw constructs by single surgeon from January 2000 to December 2005 were reviewed. The fulcrum flexibility rate (FFR) and correction rate were compared. Stepwise linear regression analysis was done and a prediction equation for the postoperative Cobb angle was developed. Thirty-five consecutive patients were included. Age at surgery was 14.8 years. Twenty scoliosis deformities were flexible, 15 were rigid. All patients had at least 2-year follow-up. The average preoperative Cobb angle was 58 degrees , fulcrum bending Cobb angle was 28 degrees , and postoperative Cobb angle 15 degrees and 16 ...Continue Reading

References

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Citations

Apr 26, 2012·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·John McCormickVincent Arlet
Aug 24, 2012·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Xu SunYong Qiu
Mar 8, 2012·Journal of Spinal Disorders & Techniques·Juliane ZennerHeiko Koller
Oct 16, 2012·Orthopaedics & Traumatology, Surgery & Research : OTSR·M FranicM Pecina
Jun 24, 2017·Acta ortopedica brasileira·Luciano Miller Reis RodriguesLeonardo Yukio Jorge Asano
Jun 29, 2016·Clinical Spine Surgery : a Spine Publication·Sung Joon ShinJae Hyup Lee
Jul 31, 2014·Clinical Spine Surgery : a Spine Publication·Jingfeng LiKeith D K Luk
Oct 27, 2015·Journal of Biomechanical Engineering·Hedayeh MehmanparastJean-Marc Mac-Thiong
Aug 29, 2014·Journal of Orthopaedic Surgery·Kenneth M C CheungKeith D K Luk
Sep 1, 2011·Revista Brasileira De Ortopedia·Alberto Ofenhejm GotfrydLuis Carlos Ferreira da Silva
Jan 5, 2017·Clinical Orthopaedics and Related Research·Hideki ShigematsuKeith Dip Kei Luk
Jan 8, 2021·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Heiko KollerAxel Hempfing
Sep 22, 2020·Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association·Hideyuki ArimaDaisuke Sakai

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