One of the most widely reported complications associated with temporomandibular joint (TMJ) prosthetic total joint replacement (TJR) surgery is condylar component screw loosening and instability. The objective of this study was to develop a musculoskeletal model of the human jaw to assess the influence of prosthetic condylar component orientation and screw placement on condylar component loading during mastication. A three-dimensional model of the jaw comprising the maxilla, mandible, masticatory muscles, articular cartilage, and articular disks was developed. Simulations of mastication and a maximum force bite were performed for the natural TMJ and the TMJ after prosthetic TJR surgery, including cases for mastication where the condylar component was rotated anteriorly by 0 deg, 5 deg, 10 deg, and 15 deg. Three clinically significant screw configurations were investigated: a complete, posterior, and minimal-posterior screw (MPS) configuration. Increases in condylar anterior rotation led to an increase in prosthetic condylar component contact stresses and substantial increases in condylar component screw stresses. The use of more screws in condylar fixation reduced screw stress magnitudes and maximum condylar component stresses. Screws placed superiorly experienced higher stresses than those of all other condylar fixation screws. The results of the present study have important implication for the way in which prosthetic components are placed during TMJ prosthetic TJR surgery.
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April 2015
Research-Article
Prosthesis Loading After Temporomandibular Joint Replacement Surgery: A Musculoskeletal Modeling Study Available to Purchase
David C. Ackland,
David C. Ackland
1
Department of Mechanical Engineering,
Victoria 3010,
e-mail: dackland@unimelb.edu.au
University of Melbourne
,Building 170
,Victoria 3010,
Australia
e-mail: dackland@unimelb.edu.au
1Corresponding author.
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Adrian Moskaljuk,
Adrian Moskaljuk
Department of Mechanical Engineering,
Victoria 3010,
e-mail: moskaljuka@gmail.com
University of Melbourne
,Building 170
,Victoria 3010,
Australia
e-mail: moskaljuka@gmail.com
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Chris Hart,
Suite 3, Level 10,
e-mail: cnhart@mac.com
Chris Hart
St Vincent's Hospital
,Suite 3, Level 10,
20 Collins Street, Victoria 3000
, Australia
e-mail: cnhart@mac.com
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Peter Vee Sin Lee,
Peter Vee Sin Lee
Department of Mechanical Engineering,
Victoria 3010,
e-mail: pvlee@unimelb.edu.au
University of Melbourne
,Building 170
,Victoria 3010,
Australia
e-mail: pvlee@unimelb.edu.au
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George Dimitroulis
20 Collins Street,
Victoria 3000,
e-mail: geodim25@gmail.com
George Dimitroulis
St Vincent's Hospital
,Suite 5, Level 10
,20 Collins Street,
Victoria 3000,
Australia
e-mail: geodim25@gmail.com
Search for other works by this author on:
David C. Ackland
Department of Mechanical Engineering,
Victoria 3010,
e-mail: dackland@unimelb.edu.au
University of Melbourne
,Building 170
,Victoria 3010,
Australia
e-mail: dackland@unimelb.edu.au
Adrian Moskaljuk
Department of Mechanical Engineering,
Victoria 3010,
e-mail: moskaljuka@gmail.com
University of Melbourne
,Building 170
,Victoria 3010,
Australia
e-mail: moskaljuka@gmail.com
Chris Hart
St Vincent's Hospital
,Suite 3, Level 10,
20 Collins Street, Victoria 3000
, Australia
e-mail: cnhart@mac.com
Peter Vee Sin Lee
Department of Mechanical Engineering,
Victoria 3010,
e-mail: pvlee@unimelb.edu.au
University of Melbourne
,Building 170
,Victoria 3010,
Australia
e-mail: pvlee@unimelb.edu.au
George Dimitroulis
St Vincent's Hospital
,Suite 5, Level 10
,20 Collins Street,
Victoria 3000,
Australia
e-mail: geodim25@gmail.com
1Corresponding author.
Manuscript received April 7, 2014; final manuscript received December 10, 2014; published online February 5, 2015. Assoc. Editor: Brian D. Stemper.
J Biomech Eng. Apr 2015, 137(4): 041001 (9 pages)
Published Online: April 1, 2015
Article history
Received:
April 7, 2014
Revision Received:
December 10, 2014
Online:
February 5, 2015
Citation
Ackland, D. C., Moskaljuk, A., Hart, C., Vee Sin Lee, P., and Dimitroulis, G. (April 1, 2015). "Prosthesis Loading After Temporomandibular Joint Replacement Surgery: A Musculoskeletal Modeling Study." ASME. J Biomech Eng. April 2015; 137(4): 041001. https://doi.org/10.1115/1.4029503
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