| Title: |
Biomechanical Strength of Reconstruction Plates when Used for Medial Support of Med-El Cochlear Implants: Implications for Diagnostic MRI |
| Authors: |
Poetker, David M.; Wackym, P. Ashley; Yoganandan, Narayan; Runge-Samuelson, Christina L.; Firszt, Jill B.; Pintar, Frank A. |
| Source: |
ORL ; volume 68, issue 2, page 77-82 ; ISSN 0301-1569 1423-0275 |
| Publisher Information: |
S. Karger AG |
| Publication Year: |
2006 |
| Description: |
Purpose: It is hypothesized that a mesh reconstruction plate designed to fit a cochlear implant (CI) internal device will provide immediate structural support to the site of the implant and that this strength far exceeds the forces induced by a 1.5-tesla MRI. Procedures: Human calvarial specimens were drilled and plated with reconstruction mesh. Force was applied until failure was reached. Results: Mean maximum force, mean force to first failure and mean displacement measures for group 1 (resorbable mesh, n = 10) were 302.9 N, 283.0 N and 3.05 mm, respectively. The mean maximum force for group 2 (0.4-mm titanium mesh, n = 10) and group 3 (0.6-mm titanium mesh, n = 8), were 121.3 and 234.0 N, respectively. Mean force of first failure was 92.0 N for group 2 and 164.8 N for group 3. Conclusions: The force required for failure of the mesh is significantly greater than the 0.17 N exerted on a CI magnet by a 1.5-tesla MRI scan. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1159/000091118 |
| Availability: |
https://doi.org/10.1159/000091118; https://www.karger.com/Article/Pdf/91118 |
| Rights: |
https://www.karger.com/Services/SiteLicenses ; https://www.karger.com/Services/SiteLicenses |
| Accession Number: |
edsbas.C2A1AF3D |
| Database: |
BASE |