Intraoperative Computerized Tomography for Improved Accuracy of Spinal Navigation in Pedicle Screw Placement of the Thoracic Spine

2003 ◽  
pp. 105-113 ◽  
Author(s):  
K. Ebmeier ◽  
K. Giest ◽  
R. Kalff
Keyword(s):  
Pedicle Screw ◽  
Computerized Tomography ◽  
Thoracic Spine ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Spinal Navigation ◽  
Improved Accuracy

scholarly journals Anatomic considerations for C2 pedicle screw placement: the use of computerized tomography measurements

2009 ◽  
Vol 8 (1) ◽  
pp. 80-83
Author(s):  
Adebukoa Onibokun ◽  
Simona Bistazzoni ◽  
Marco Sassi ◽  
Larry T. Khoo
Keyword(s):  
Pedicle Screw ◽  
Computerized Tomography ◽  
Preoperative Planning ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
C2 Pedicle Screw ◽  
Anatomical Knowledge ◽  
Axial Ct ◽  
The Mean ◽  
Pedicle Width

OBJECTIVE: more detailed anatomical knowledge of the C2 pedicle is required to optimize and minimize the risk of screw placement. The aim of this study was to evaluate the linear and angular dimensions of the true C2 pedicle using axial CT. METHODS: ninety three patients (47 males, 46 females mean age 48 years) who had cervical spinal CT imaging performed were evaluated for this study. Axial images of the C2 pedicle were selected and the following pedicle parameters were determined: pedicle width (PW, the mediolateral diameter of the pedicle isthmus, perpendicular to the pedicle axis) and pedicle transverse angle (PTA, that is, the angle between the pedicle axis and the midline of the vertebral body). RESULTS: the overall mean pedicle width was 5.8 1.2mm. The mean pedicle width in males (6.01.3mm) was greater than that in the female subjects (5.6 1.1mm). This difference was not found to be statistically significant (p=.6790). The overall mean pedicle transverse angle was 43.93.9 degrees. The mean PTA in males was 43.23.8 degrees, while that in females was 44.73.7 degrees. CONCLUSION: preoperative planning is absolutely mandatory, particularly in determining not only screw trajectory, but in analyzing individual patient anatomy and reception to a C2 pedicle screw.

Anatomic Considerations of Pedicle Screw Placement in the Thoracic Spine

Spine ◽  
1998 ◽  
Vol 23 (9) ◽  
pp. 1065-1068 ◽  
Author(s):  
Rongming Xu ◽  
Nabil A. Ebraheim ◽  
Yianjia Ou ◽  
Richard A. Yeasting
Keyword(s):  
Pedicle Screw ◽  
Thoracic Spine ◽  
Screw Placement ◽  
Pedicle Screw Placement

scholarly journals Percutaneous pedicle screw placement in the thoracic spine: A cadaveric study

2013 ◽  
Vol 8 (3) ◽  
pp. 153 ◽  
Author(s):  
ShahidM Nimjee ◽  
CarolynA Hardin ◽  
IsaacO Karikari ◽  
Abhishek Agrawal ◽  
RichardG Fessler ◽  
...  
Keyword(s):  
Pedicle Screw ◽  
Thoracic Spine ◽  
Cadaveric Study ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Percutaneous Pedicle Screw

scholarly journals Evaluation of a transpedicular drill guide for pedicle screw placement in the thoracic spine

2003 ◽  
Vol 12 (5) ◽  
pp. 542-547 ◽  
Author(s):  
Jean-Marc Mac-Thiong ◽  
Hubert Labelle ◽  
Marcel Rooze ◽  
V�ronique Feipel ◽  
Carl-Eric Aubin
Keyword(s):  
Pedicle Screw ◽  
Thoracic Spine ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Drill Guide

754 A Novel Approach toward Pedicle Screw Placement in the Thoracic Spine

Neurosurgery ◽  
2001 ◽  
Vol 49 (2) ◽  
pp. 522
Author(s):  
John S. Thalgott ◽  
Mark B. Kabins ◽  
James M. Giuffre
Keyword(s):  
Pedicle Screw ◽  
Thoracic Spine ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Novel Approach

A novel approach toward pedicle screw placement in the thoracic spine

2002 ◽  
Vol 2 (5) ◽  
pp. 117-118
Author(s):  
John Thalgott ◽  
Mark Kabins ◽  
James Giuffre
Keyword(s):  
Pedicle Screw ◽  
Thoracic Spine ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Novel Approach

scholarly journals Improved Accuracy and Safety of Pedicle Screw Placement by Using a Probe with an Electrical Conductivity-Measuring Device during Severe Syndromic and Neuromuscular Scoliosis Spine Surgery

2022 ◽  
Vol 11 (2) ◽  
pp. 419
Author(s):  
Takashi Yurube ◽  
Yutaro Kanda ◽  
Masaaki Ito ◽  
Yoshiki Takeoka ◽  
Teppei Suzuki ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Pedicle Screw ◽  
Small Sample Size ◽  
Small Sample ◽  
Neuromuscular Scoliosis ◽  
Screw Placement ◽  
Pedicle Screw Placement ◽  
Measuring Device ◽  
Screw Insertion ◽  
Improved Accuracy

An electrical conductivity-measuring device (ECD) has recently been developed to support pedicle screw placement. However, no evidence exists regarding its efficacy for syndromic/neuromuscular scoliosis with extremely difficult screwing. We retrospectively reviewed 2010–2016 medical records of 21 consecutive syndromic/neuromuscular scoliosis patients undergoing free-hand segmental fixation surgery at our institution and compared the pedicle screw insertion accuracy and safety between 10 with a conventional non-ECD probe (2010–2013) and 11 with an ECD probe (2014–2016). We analyzed preoperative pedicle shape and postoperative screw placement in computed tomography. There were no significant differences between ECD and non-ECD groups in demographic, clinical, and treatment characteristics including scoliosis severity and pedicle diameter. The abandonment rate due to liquorrhea or perforation was lower in ECD (12.3%) than in non-ECD (26.7%) (p < 0.01). Acceptable insertion without perforation or <2-mm lateral/cranial position was more frequent in ECD (67.1%) than in non-ECD (56.9%) (p = 0.02). Critical ≥5-mm medial/caudal malposition was not seen in ECD (0.0%) but in non-ECD (2.4%) (p = 0.02). The perforation distance was shorter in ECD (2.2 ± 1.1 mm) than in non-ECD (2.6 ± 1.7 mm) (p = 0.01). Results involve small sample size, selection, performance, and learning curve biases; nevertheless, ECD could be useful for more accurate and safer pedicle screw placement in severe syndromic/neuromuscular scoliosis.

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