Development and phantom test of a minimized water-jet ultrasound indentation system for arthroscopic measurement of articular cartilage integrity

Y. P. Huang, Yongping Zheng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The detection of early degeneration of the articular cartilage is an important step to stop, delay or even reverse this otherwise irreversible process when detected in its advanced or late stage. A water-jet ultrasound indentation system has been previously developed in our group for assessing the articular cartilage integrity. This study aims to further design a minimized water-jet ultrasound indentation probe intended for the arthroscopic measurement of the articular cartilage status. The probe was constructed by installing a 10 MHz ultrasound transducer (Φ = 3 mm) at the tip of a plastic rod (Φ = 12 mm) with an axial hole for generating the water jet (Φ = 2 mm). Preliminary test was performed on 28 phantoms with various stiffness values. A stiffness coefficient was calculated by a linear fitting of the force/deformation curve obtained from the indentation system. Results showed that the stiffness coefficient measured from the current system (0.625 ± 0.488 N/mm) agreed well with that from a rigid-contact mechanical indentation test (0.730 ± 0.631 N/mm) with a high correlation (r2= 0.98, p < 0.001). Therefore, it was concluded that the performance of this water-jet indentation system was comparable to the conventional indentation. The incorporation of ultrasound in the minimized indentation system can further assess the morphologic and acoustic properties, thus enabling a compound characterization of the articular cartilage integrity under arthroscopic control.
Original languageEnglish
Title of host publication6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech
Pages903-906
Number of pages4
Volume31 IFMBE
DOIs
Publication statusPublished - 22 Oct 2010
Event6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech - Singapore, Singapore
Duration: 1 Aug 20106 Aug 2010

Conference

Conference6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech
CountrySingapore
CitySingapore
Period1/08/106/08/10

Keywords

  • arthroscopy
  • Articular cartilage
  • degeneration
  • indentation
  • mechanical properties
  • minimization
  • probe
  • ultrasound

ASJC Scopus subject areas

  • Biomedical Engineering
  • Bioengineering

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