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Journal of Long-Term Effects of Medical Implants
SJR: 0.145 SNIP: 0.491 CiteScore™: 0.89

ISSN Druckformat: 1050-6934
ISSN Online: 1940-4379

Journal of Long-Term Effects of Medical Implants

DOI: 10.1615/JLongTermEffMedImplants.2019027302
pages 327-334

Use of Ferrule Rings as Stress Dissipators in Temporomandibular Joint Intramedullary Implants: A Finite Element Analysis Study

Martin Pendola
Department of Orthopedic Surgery, New York University School of Medicine, New York, NY 10016
Jake Cresta
Department of Orthopedic Surgery, New York University School of Medicine, New York, NY 10016
Alesha Castillo
Departments of Orthopaedic Surgery and Mechanical Engineering, New York University Langone Health, New York, NY 10016
Thorsten Kirsch
Departments of Orthopaedic Surgery and Cell Biology, New York University School of Medicine, New York NY 10016; Director, Musculoskeletal Research Center, Hospital for Joint Diseases at New York University Langone Health, New York, NY 10016

ABSTRAKT

The use of temporomandibular joint (TMJ) implants is considered to be a reliable treatment for some TMJ disorders when TMJ anatomical integrity is compromised. Among all of the designs proposed for these devices, intramedullary approaches are relatively new, and they may offer several advantages compared to those of past models with a lateral approach. In this report, we use finite element analysis (FEA) to calculate stress forces of a TMJ implant featuring a ferrule ring, which is frequently used in engineering as a stress distractor to reduce the splinter effect. Our analysis suggests that the addition of a ferrule ring in the TMJ implant helps to reduce von Mises stresses in the device and displacement forces in the volume and surface of the implant. These results suggest that including a ferrule ring in a TMJ implant may contribute to the stability and outcome of a TMJ implant by reducing component stress and displacement forces.

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