Unilateral lag-screw technique for an isolated anterior 1/4 atlas fracture

Study Design: Fractures of the atlas are classified based on the fracture location and associated ligamentous injury. Among patients with atlas fractures treated using external immobilization, nonunion of the fracture could be seen. Objective: Ideally, treatment strategy for an unstable atlas fractu...

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Main Authors: Semih Keskil, Murat Göksel, Ulas Yüksel
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2016-01-01
Series:Journal of Craniovertebral Junction and Spine
Subjects:
Online Access:http://www.jcvjs.com/article.asp?issn=0974-8237;year=2016;volume=7;issue=1;spage=50;epage=54;aulast=Keskil
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author Semih Keskil
Murat Göksel
Ulas Yüksel
author_facet Semih Keskil
Murat Göksel
Ulas Yüksel
author_sort Semih Keskil
collection DOAJ
description Study Design: Fractures of the atlas are classified based on the fracture location and associated ligamentous injury. Among patients with atlas fractures treated using external immobilization, nonunion of the fracture could be seen. Objective: Ideally, treatment strategy for an unstable atlas fracture would involve limited fixation to maintain the fracture fragments in a reduced position without restricting the range of motion (ROM) of the atlantoaxial and atlantooccipital joints. Summary of Background Data: Such a result can be established using either transoral limited internal fixation or limited posterior lateral mass fixation. However, due to high infection risk and technical difficulty, posterior approaches are preferred but none of these techniques can fully address anterior 1/4 atlas fractures such as in this case. Materials and Methods: A novel open and direct technique in which a unilateral lag screw was placed to reduce and stabilize a progressively widening isolated right-sided anterior 1/4 single fracture of C 1 that was initially treated with a rigid cervical collar is described. Results: Radiological studies made after the surgery showed no implant failure, good cervical alignment, and good reduction with fusion of C 1 . Conclusions: It is suggested that isolated C 1 fractures can be surgically reduced and immobilized using a lateral compression screw to allow union and maintain both C 1-0 and C 1-2 motions, and in our knowledge this is the first description of the use of a lag screw to achieve reduction of distracted anterior 1/4 fracture fragments of the C1 from a posterior approach. This technique has the potential to become a valuable adjunct to the surgeon′s armamentarium, in our opinion, only for fractures with distracted or comminuted fragments whose alignment would not be expected to significantly change with classical lateral mass screw reduction.
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spelling doaj.art-bf65ab006d3f49828d6982e5eec2b4ba2022-12-21T19:53:53ZengWolters Kluwer Medknow PublicationsJournal of Craniovertebral Junction and Spine0974-82372016-01-0171505410.4103/0974-8237.176625Unilateral lag-screw technique for an isolated anterior 1/4 atlas fractureSemih KeskilMurat GökselUlas YükselStudy Design: Fractures of the atlas are classified based on the fracture location and associated ligamentous injury. Among patients with atlas fractures treated using external immobilization, nonunion of the fracture could be seen. Objective: Ideally, treatment strategy for an unstable atlas fracture would involve limited fixation to maintain the fracture fragments in a reduced position without restricting the range of motion (ROM) of the atlantoaxial and atlantooccipital joints. Summary of Background Data: Such a result can be established using either transoral limited internal fixation or limited posterior lateral mass fixation. However, due to high infection risk and technical difficulty, posterior approaches are preferred but none of these techniques can fully address anterior 1/4 atlas fractures such as in this case. Materials and Methods: A novel open and direct technique in which a unilateral lag screw was placed to reduce and stabilize a progressively widening isolated right-sided anterior 1/4 single fracture of C 1 that was initially treated with a rigid cervical collar is described. Results: Radiological studies made after the surgery showed no implant failure, good cervical alignment, and good reduction with fusion of C 1 . Conclusions: It is suggested that isolated C 1 fractures can be surgically reduced and immobilized using a lateral compression screw to allow union and maintain both C 1-0 and C 1-2 motions, and in our knowledge this is the first description of the use of a lag screw to achieve reduction of distracted anterior 1/4 fracture fragments of the C1 from a posterior approach. This technique has the potential to become a valuable adjunct to the surgeon′s armamentarium, in our opinion, only for fractures with distracted or comminuted fragments whose alignment would not be expected to significantly change with classical lateral mass screw reduction.http://www.jcvjs.com/article.asp?issn=0974-8237;year=2016;volume=7;issue=1;spage=50;epage=54;aulast=KeskilAtlasfracturelag screwnonfusionscrewunilateral
spellingShingle Semih Keskil
Murat Göksel
Ulas Yüksel
Unilateral lag-screw technique for an isolated anterior 1/4 atlas fracture
Journal of Craniovertebral Junction and Spine
Atlas
fracture
lag screw
nonfusion
screw
unilateral
title Unilateral lag-screw technique for an isolated anterior 1/4 atlas fracture
title_full Unilateral lag-screw technique for an isolated anterior 1/4 atlas fracture
title_fullStr Unilateral lag-screw technique for an isolated anterior 1/4 atlas fracture
title_full_unstemmed Unilateral lag-screw technique for an isolated anterior 1/4 atlas fracture
title_short Unilateral lag-screw technique for an isolated anterior 1/4 atlas fracture
title_sort unilateral lag screw technique for an isolated anterior 1 4 atlas fracture
topic Atlas
fracture
lag screw
nonfusion
screw
unilateral
url http://www.jcvjs.com/article.asp?issn=0974-8237;year=2016;volume=7;issue=1;spage=50;epage=54;aulast=Keskil
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AT muratgoksel unilaterallagscrewtechniqueforanisolatedanterior14atlasfracture
AT ulasyuksel unilaterallagscrewtechniqueforanisolatedanterior14atlasfracture