Basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / Abdul Halim Abdullah … [et al.]

The failure of anterior cruciate ligament (ACL) produces abnormal kinematics of the knee joint and leads to knee instability. Graft fixation is the critical issue in the ACL reconstruction especially during the primary post operative period. Interference screw has become as one of the most common us...

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Main Authors:	Abdullah, Abdul Halim, Mahmud, Jamaluddin, Rashid, Helmi, Othman, Muhamad Fauzi, Mohd Saman, Alias
Format:	Research Reports
Language:	English
Published:	Research Management Institute (RMI) 2012
Subjects:	Medical technology Computer applications to medicine. Medical informatics
Online Access:	http://ir.uitm.edu.my/id/eprint/21260/ http://ir.uitm.edu.my/id/eprint/21260/1/LP_ABDUL%20HALIM%20ABDULLAH%20RMI%2012_5.pdf

id	uitm-21260
recordtype	eprints
spelling	uitm-212602018-08-15T07:37:29Z http://ir.uitm.edu.my/id/eprint/21260/ Basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / Abdul Halim Abdullah … [et al.] Abdullah, Abdul Halim Mahmud, Jamaluddin Rashid, Helmi Othman, Muhamad Fauzi Mohd Saman, Alias Medical technology Computer applications to medicine. Medical informatics The failure of anterior cruciate ligament (ACL) produces abnormal kinematics of the knee joint and leads to knee instability. Graft fixation is the critical issue in the ACL reconstruction especially during the primary post operative period. Interference screw has become as one of the most common used fixation methods for ACL reconstruction. The objectives of this research are to develop the mechanical concept and finite element model of interference screw fixation in ACL reconstruction. Also, to investigate the fundamental mechanical factors that contribute to the primary stability of the fixation such as material properties of screws, screws geometry and screw positioning and alignment. Finite element analysis are conducted and discussed with respect of stress distribution and total displacement. Results show that all investigated factors do influenced the primary stability of the ACL reconstruction. Proper stress distribution and total displacement at the interference screw fixation will enhance the primary stability of the ACL reconstruction. Interference screws with different materials will reflect the graft fixation in the tunnels. Screws with dedicated bio-absorbable materials are believed to represent the best choice in terms of displacement and stress development. In the second case study, the root of the thread of the interference screw is found out to develop more stress under loading compared to other regions. The results obtained show that the more thread the interference screw posses; the stronger the fixation will be and also, the fixation improved with a larger diameter of screw size. Finally, the 3rd study represent the effects of different positioning during the ACL reconstruction procedure. The maximum tunnel and screw deformation occur in 90 degree knee flexion fixation. Minimum tunnel and screw deformation was observed in 60 degree knee flexion fixation. The maximum tunnel and screw stress has been found in 90 degree knee flexion fixation and decreases proportionally to the load and angle of fixation to 60 degree. Outcomes of the study shows that the mechanical factors are important to predict the primary stability of the interference screw fixation of ACL reconstruction. Research Management Institute (RMI) 2012 Research Reports NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/21260/1/LP_ABDUL%20HALIM%20ABDULLAH%20RMI%2012_5.pdf Abdullah, Abdul Halim and Mahmud, Jamaluddin and Rashid, Helmi and Othman, Muhamad Fauzi and Mohd Saman, Alias (2012) Basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / Abdul Halim Abdullah … [et al.]. [Research Reports] (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Medical technology Computer applications to medicine. Medical informatics
spellingShingle	Medical technology Computer applications to medicine. Medical informatics Abdullah, Abdul Halim Mahmud, Jamaluddin Rashid, Helmi Othman, Muhamad Fauzi Mohd Saman, Alias Basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / Abdul Halim Abdullah … [et al.]
description	The failure of anterior cruciate ligament (ACL) produces abnormal kinematics of the knee joint and leads to knee instability. Graft fixation is the critical issue in the ACL reconstruction especially during the primary post operative period. Interference screw has become as one of the most common used fixation methods for ACL reconstruction. The objectives of this research are to develop the mechanical concept and finite element model of interference screw fixation in ACL reconstruction. Also, to investigate the fundamental mechanical factors that contribute to the primary stability of the fixation such as material properties of screws, screws geometry and screw positioning and alignment. Finite element analysis are conducted and discussed with respect of stress distribution and total displacement. Results show that all investigated factors do influenced the primary stability of the ACL reconstruction. Proper stress distribution and total displacement at the interference screw fixation will enhance the primary stability of the ACL reconstruction. Interference screws with different materials will reflect the graft fixation in the tunnels. Screws with dedicated bio-absorbable materials are believed to represent the best choice in terms of displacement and stress development. In the second case study, the root of the thread of the interference screw is found out to develop more stress under loading compared to other regions. The results obtained show that the more thread the interference screw posses; the stronger the fixation will be and also, the fixation improved with a larger diameter of screw size. Finally, the 3rd study represent the effects of different positioning during the ACL reconstruction procedure. The maximum tunnel and screw deformation occur in 90 degree knee flexion fixation. Minimum tunnel and screw deformation was observed in 60 degree knee flexion fixation. The maximum tunnel and screw stress has been found in 90 degree knee flexion fixation and decreases proportionally to the load and angle of fixation to 60 degree. Outcomes of the study shows that the mechanical factors are important to predict the primary stability of the interference screw fixation of ACL reconstruction.
format	Research Reports
author	Abdullah, Abdul Halim Mahmud, Jamaluddin Rashid, Helmi Othman, Muhamad Fauzi Mohd Saman, Alias
author_facet	Abdullah, Abdul Halim Mahmud, Jamaluddin Rashid, Helmi Othman, Muhamad Fauzi Mohd Saman, Alias
author_sort	Abdullah, Abdul Halim
title	Basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / Abdul Halim Abdullah … [et al.]
title_short	Basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / Abdul Halim Abdullah … [et al.]
title_full	Basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / Abdul Halim Abdullah … [et al.]
title_fullStr	Basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / Abdul Halim Abdullah … [et al.]
title_full_unstemmed	Basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / Abdul Halim Abdullah … [et al.]
title_sort	basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / abdul halim abdullah … [et al.]
publisher	Research Management Institute (RMI)
publishDate	2012
url	http://ir.uitm.edu.my/id/eprint/21260/ http://ir.uitm.edu.my/id/eprint/21260/1/LP_ABDUL%20HALIM%20ABDULLAH%20RMI%2012_5.pdf
first_indexed	2023-09-18T23:06:11Z
last_indexed	2023-09-18T23:06:11Z
_version_	1777418498781216768

Basic study of interference screw fixation stability in anterior cruciate ligament reconstruction / Abdul Halim Abdullah … [et al.]

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