Prof. Kristina K. Levchenko Profile

Prof. Kristina K. Levchenko

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 21 February 2020 Paper

Development of personalized osteotomy technique for the first metatarsal bone

Anastasiya Golyadkina, Asel Polienko, Sergey Kireev, Kristina Levchenko, V. Protcko, Vladimir Kireev

Proceedings Volume 11229, 112291U (2020) https://doi.org/10.1117/12.2544994

KEYWORDS: Bone, Surgery, 3D modeling, Systems modeling, Data modeling, Finite element methods, Computed tomography, SolidWorks, Modeling, Tissues

Read Abstract +

Surgical methods form the basis of modern approach to forefoot deformities correction. Scientific and practical interest in this topic is based on the patients’ growing need for specialized care, which is required by 64% of women and 25% of men. In most cases, there is bilateral deformation of both feet. Some scientists are strongly against simultaneous surgery on both feet. It is obvious that the solution regarding acceptability of the load in the early postoperative period requires quantitative individual assessment. This assessment can be performed using biomechanics. This paper presents the technique for assessing the bone-screw system when performing corrective osteotomies of the first metatarsal bone based on biomechanical methods. This technique allows to perform comparative analysis of various osteotomy methods for a particular patient. In this study we examined Chevron and Scarf osteotomy with displacement of bone fragments by 1/3 and 2/3 with different fixation variants. To solve this problem, personalized geometric models of the first metatarsal bone were built on the basis of computed tomography data using 3D Slicer and SolidWorks systems. The implant models were built as well. Finite element analysis was carried out using Ansys Workbench software. The focus of the study was to analyse stresses that occur on the plantar surface of the first metatarsal bone head during walking. Assessment of the maximum allowable shift of bone fragments for normalization of the forefoot deformities was carried out. The developed technique allows to choose osteotomy variant and justify the possibility of simultaneous surgery on both feet for a particular patient.

Proceedings Article | 21 February 2020 Paper

Biomechanical modeling of surgical treatment of unilateral sacral fractures

Aleksandr Dol, Dmitrii Ivanov, Kristina Levchenko, Sergey Kireev, Igor Kazhanov, Sergey Mikityuk, Vadim Manukovsky

Proceedings Volume 11229, 112291G (2020) https://doi.org/10.1117/12.2542202

KEYWORDS: Bone, 3D modeling, Tissues, Titanium, Data modeling, Spine, Finite element methods, Biological research, SolidWorks, Emergency medicine

Read Abstract +

Models of L4 and L5 vertebrae, sacrum and iliac bones were constructed on the basis of a computer tomogram. The sacrum model was constructed with three types of fractures: outward from the facet joint passing through the facet joint and inward relative to the facet joint. In addition, two main splinters of the sacrum were modeled, as well as screws passing through the iliac bones and elements of transpedicular fixation. Two variants of typical loads were considered: compression load and bending moment, compression load and rotation moment. In the case where screws passing through the iliac bones were combined with transpedicular screws, the maximum displacement in the models (for all three types of fracture) significantly decreased. This allows us to conclude that the variant of fixation with the help of a transpedicular structure makes the model more stable, that is, increases the rigidity of the structure, preventing the fixed elements of the vertebral-pelvic complex from shifting relative to each other. Equivalent stresses in the screws passing through the iliac bones were also reduced when installing the transpedicular structure. In this case, the stresses in the bone tissues did not differ significantly with different types of implants and loading options. Thus, if we evaluate the field of equivalent stresses in the models, a more rational from the point of view of biomechanics is the option of installing a transpedicular system in addition to screws passing through the iliac bones. This will reduce the risk of damage to both the structure and bone tissue.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years