Accuracy Analysis of Pedicle Screw Placement in Posterior Scoliosis Surgery

Spine ◽  
2007 ◽  
Vol 32 (14) ◽  
pp. 1543-1550 ◽  
Author(s):  
Yoshihisa Kotani ◽  
Kuniyoshi Abumi ◽  
Manabu Ito ◽  
Masahiko Takahata ◽  
Hideki Sudo ◽  
...  
Keyword(s):  
Pedicle Screw ◽  
Screw Placement ◽  
Scoliosis Surgery ◽  
Accuracy Analysis ◽  
Pedicle Screw Placement

scholarly journals Efficacy and safety for combination of t-EMG with O-arm assisted pedicle screw placement in neurofibromatosis type I scoliosis surgery

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Xiexiang Shao ◽  
Zifang Huang ◽  
Jingfan Yang ◽  
Yaolong Deng ◽  
Junlin Yang ◽  
...  
Keyword(s):  
Pedicle Screw ◽  
Pedicle Screws ◽  
Neurofibromatosis Type ◽  
Screw Placement ◽  
Type I ◽  
Scoliosis Surgery ◽  
Neurofibromatosis Type I ◽  
Efficacy And Safety ◽  
Pedicle Screw Placement ◽  
Channel Classification

Abstract Background Due to the characteristics of neurofibromatosis type I (NF-1) scoliosis, the precise placement of pedicle screws still remains to be a challenge. Triggered screw electromyography (t-EMG) has been proved to exhibit high sensitivity to identify mal-positioned pedicle screws, but no previous study assessed the combination of t-EMG with O-arm-assisted pedicle screw placement in NF-1 scoliosis surgery. Objective To evaluate efficacy and safety for combination of t-EMG with O-arm-assisted pedicle screw placement in NF-1 scoliosis surgery. Materials and methods From March 2018 to April 2020, sixty-five NF-1 scoliosis patients underwent t-EMG and O-arm-assisted pedicle screw fixation were retrospectively reviewed. The channel classification system was applied to classify the pedicle morphology based on pedicle width measurement by preoperative computed tomography scans. The minimal t-EMG threshold for screw path inspection was used as 8 mA, and operative screw redirection was also recorded. All pedicle screws were verified using a second intraoperative O-arm scan. The correlation between demographic and clinical data with amplitude of t-EMG were also analyzed. Results A total of 652 pedicle screws (T10-S1) in 65 patients were analyzed. The incidence of an absent pedicle (channel classification type C or D morphology) was 150 (23%). Overall, abnormal t-EMG threshold was identified in 26 patients with 48 screws (7.4%), while 16 out of the 48 screws were classified as G0, 14 out of the 48 screws were classified as G1, and 18 out of the 48 screws were classified as G2. The screw redirection rate was 2.8% (18/652). It showed that t-EMG stimulation detected 3 unacceptable mal-positioned screws in 2 patients (G2) which were missed by O-arm scan. No screw-related neurological or vascular complications were observed. Conclusions Combination of t-EMG with O-arm-assisted pedicle screw placement was demonstrated to be a safe and effective method in NF-1 scoliosis surgery. The t-EMG could contribute to detecting the rupture of the medial wall which might be missed by O-arm scan. Combination of t-EMG with O-arm could be recommended for routine use of screw insertion in NF-1 scoliosis surgery.

scholarly journals YAssessing Vertebral Body Rotation for Percutaneous Pedicle Screw Placement in Scoliosis Surgery

2021 ◽  
pp. 100908
Author(s):  
Patrik Suwak ◽  
Abhishek Kumar ◽  
Kirby Bonvillain ◽  
Matthew Darlow ◽  
Peter D'Amore ◽  
...  
Keyword(s):  
Pedicle Screw ◽  
Vertebral Body ◽  
Screw Placement ◽  
Scoliosis Surgery ◽  
Body Rotation ◽  
Pedicle Screw Placement ◽  
Percutaneous Pedicle Screw

Using the Freehand Pedicle Screw Placement Technique in Adolescent Idiopathic Scoliosis Surgery

Spine ◽  
2014 ◽  
Vol 39 (4) ◽  
pp. 286-290 ◽  
Author(s):  
Ozgur Dede ◽  
William Timothy Ward ◽  
Patrick Bosch ◽  
Austin J. Bowles ◽  
James W. Roach
Keyword(s):  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Pedicle Screw ◽  
Screw Placement ◽  
Scoliosis Surgery ◽  
Pedicle Screw Placement ◽  
Placement Technique

The use of CT in the development and implementation of a preoperative protocol to aid in pedicle screw placement during scoliosis surgery

2008 ◽  
Vol 38 (4) ◽  
pp. 452-456 ◽  
Author(s):  
Douglas Jamieson ◽  
Angeliki Perdios ◽  
Renjit Varghese ◽  
Christopher W. Reilly
Keyword(s):  
Pedicle Screw ◽  
Screw Placement ◽  
Scoliosis Surgery ◽  
Pedicle Screw Placement

scholarly journals INTRA- AND INTEROBSERVER ANALYSIS OF PEDICLE SCREW PLACEMENT IN SCOLIOSIS CORRECTION

2020 ◽  
Vol 19 (3) ◽  
pp. 172-175
Author(s):  
CAÍQUE JAUHAR DE CASTRO ◽  
LUIS EDUARDO CARELLI TEIXEIRA DA SILVA ◽  
LUIZ EDUARDO ALMEIDA ◽  
ALDERICO GIRÃO CAMPOS DE BARROS ◽  
ROBSON TEIXEIRA VITAL ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Pedicle Screw ◽  
Kappa Coefficient ◽  
Screw Placement ◽  
Scoliosis Surgery ◽  
Pedicle Screw Placement ◽  
Level Of Evidence ◽  
Thoracic Pedicle Screw ◽  
Strong Conclusion ◽  
Scoliosis Correction

ABSTRACT Objective To establish the statistical interobserver and intraobserver concordance of thoracic pedicle screw placement in scoliosis surgery, with a 4-week interval between the two analyses. Methods Of 55 patients that evaluated the intra- and interobserver concordances of the screw positions (according to the Abul-Kasim classification) using the Kappa coefficient. Results The intraobserver concordance ranged from a Kappa coefficient of 0.516 to 0.889 (“moderate” to “almost perfect”) between the two analyses performed four weeks apart. Interobserver concordance ranged from 0.379 to 0.633 (“reasonable” to “strong”). Conclusion The intraobserver concordance was always greater than the interobserver concordance. No concordance coefficient was classified as “insignificant” or “weak”. Level of Evidence III; Retrospective study.

scholarly journals A medium invasiveness multi-level patient’s specific template for pedicle screw placement in the scoliosis surgery

2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Farhad Azimifar ◽  
Kamran Hassani ◽  
Amir Hossein Saveh ◽  
Farhad Tabatabai Ghomsheh
Keyword(s):  
Pedicle Screw ◽  
Screw Placement ◽  
Scoliosis Surgery ◽  
Pedicle Screw Placement ◽  
Multi Level

scholarly journals Reliability of Triggered EMG for Prediction of Safety during Pedicle Screw Placement in Adolescent Idiopathic Scoliosis Surgery

2011 ◽  
Vol 5 (1) ◽  
pp. 51 ◽  
Author(s):  
Woo-Kie Min ◽  
Hyun-Joo Lee ◽  
Won-Ju Jeong ◽  
Chang-Wug Oh ◽  
Jae-Sung Bae ◽  
...  
Keyword(s):  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Pedicle Screw ◽  
Screw Placement ◽  
Scoliosis Surgery ◽  
Pedicle Screw Placement

scholarly journals Accuracy of Pedicle Screw Placement in Scoliosis Surgery: A Comparison between Conventional Computed Tomography-Based and O-Arm-Based Navigation Techniques

2014 ◽  
Vol 8 (3) ◽  
pp. 331 ◽  
Author(s):  
Toshiaki Kotani ◽  
Tsutomu Akazawa ◽  
Tsuyoshi Sakuma ◽  
Kayo Koyama ◽  
Tetsuharu Nemoto ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pedicle Screw ◽  
Screw Placement ◽  
Scoliosis Surgery ◽  
Pedicle Screw Placement
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