Quantitative comparison between the straight-forward and anatomical insertion technique for pedicle screw placement

Dejan Knez; Janez Mohar; Boštjan Likar; Franjo Pernuš; Tomaž Vrtovec

doi:10.1117/12.2216028

21 March 2016 Quantitative comparison between the straight-forward and anatomical insertion technique for pedicle screw placement

Dejan Knez, Janez Mohar, Boštjan Likar, Franjo Pernuš, Tomaž Vrtovec

Author Affiliations +

Proceedings Volume 9784, Medical Imaging 2016: Image Processing; 978439 (2016) https://doi.org/10.1117/12.2216028
Event: SPIE Medical Imaging, 2016, San Diego, California, United States

Abstract

Spinal deformity correction with vertebral fixation is nowadays the preferred surgical treatment, where pedicle screws are inserted through pedicles into corresponding vertebral bodies and afterwards connected with rods. In clinical practice, the straight-forward and anatomical insertion technique are currently being used for pedicle screw placement surgery. However, it is difficult to quantitatively compare both techniques and determine which technique is more adequate for each planned pedicle screw before surgery (i.e. preoperatively). In this paper, we therefore describe a framework for quantitative comparison between the straight-forward and anatomical insertion technique for pedicle screw placement surgery by evaluating the screw fastening strength. Quantitative comparisons were performed on computed tomography images of 11 patients with 74 manually planned pedicle screws, who underwent the vertebral fixation procedure. The first quantitative comparison was performed between the straight-forward and anatomical pedicle screw insertion technique, which resulted in a relatively high agreement with mean absolute difference of 0.0mm in screw diameter, 2.9mm in screw length, 1.2mm in pedicle crossing point and 6.5° in screw inclinations. The second quantitative comparison was performed between the best resulting pedicle screw insertion technique and manually obtained pedicle screw plans, which again resulted in a relatively high agreement with mean absolute difference of 0.5mm in screw diameter, 4.7mm in screw length, 2.4mm in pedicle crossing point and 6.0° in screw inclinations. Both the straight-forward and anatomical insertion technique proved approximately equal in terms of the screw fastening strength.

Citation Download Citation

Dejan Knez, Janez Mohar, Boštjan Likar, Franjo Pernuš, and Tomaž Vrtovec "Quantitative comparison between the straight-forward and anatomical insertion technique for pedicle screw placement", Proc. SPIE 9784, Medical Imaging 2016: Image Processing, 978439 (21 March 2016); https://doi.org/10.1117/12.2216028

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

3D modeling

3D image processing

Surgery

Computed tomography

Spine

Optimization (mathematics)

Bone

Show All Keywords

Keywords/Phrases

Search In:

Publication Years