2D stiffness mapping for localizing osteoarthritic degenerated cartilage by using a fast indentation system based on fiber Bragg gratings

A. Javadzadeh Kalahrodi; G. Marchi; J. Möller; S. Nolte; J. Roths

doi:10.1117/12.2539252

28 August 2019 2D stiffness mapping for localizing osteoarthritic degenerated cartilage by using a fast indentation system based on fiber Bragg gratings

A. Javadzadeh Kalahrodi, G. Marchi, J. Möller, S. Nolte, J. Roths

Author Affiliations +

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111990X (2019) https://doi.org/10.1117/12.2539252
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

A fast indentation system for 2D stiffness mapping of cartilage is presented. The goal of this technique, which has the potential to be deployed endoscopically, is to localize and to distinguish between regions of healthy and degenerated cartilage. In the system presented here, forces are measured by a fiber Bragg grating (FBG), which is located at the end of a fiber optic indenter probe. This approach enables small indenter dimensions, which are advantageous for endoscopic use. Differences between the stiffness parameters measured on healthy cartilage and on the same sample after artificial degeneration are observed. It is shown that the fast indentation system has the capability to distinguish healthy bovine cartilage from artificially degenerated one. The evaluation of this capability will make the conclusions of the work.

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A. Javadzadeh Kalahrodi, G. Marchi, J. Möller, S. Nolte, and J. Roths "2D stiffness mapping for localizing osteoarthritic degenerated cartilage by using a fast indentation system based on fiber Bragg gratings", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111990X (28 August 2019); https://doi.org/10.1117/12.2539252

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