USING PATELLAR VIBRATION TO TEST ARTICULAR CARTILAGE

D. E. Beverland, G. F. McCoy, George Kernohan, R. A.B. Mollan

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

Patellar vibration is measured using a 2-g accelerometer. This is a sensor which, when taped to the skin over a joint, can detect underlying vibration. The technique of recording and analyzing this phenomenon has been called vibration arthrography. As the knee moves slowly (about three degrees per second) the normal patella produces a characteristic vibration called physiological patellofemoral crepitus. Experimental work has shown that this occurs as a result of stick slip friction at the cartilage interface. This technique therefore provides the potential for noninvasive examination of the mechanical properties of articular cartilage. However, difficulties have been encountered in the standardization of the signal due to its sensitivity to changes in angular velocity at the knee.

Original languageEnglish
Pages1547-1548
Number of pages2
Publication statusPublished - 7 Nov 1986
EventIEEE Engineering in Medicine and Biology Society: 8th Annual Conference -
Duration: 7 Nov 19867 Nov 1986

Conference

ConferenceIEEE Engineering in Medicine and Biology Society: 8th Annual Conference
Period7/11/867/11/86

Keywords

  • knee injuries
  • Vibration arthrometry

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