NEELY, LA, Kernohan, George, BARR, DA, MEE, CHB and MOLLAN, RAB (1991) OPTICAL MEASUREMENTS OF PHYSIOLOGICAL PATELLOFEMORAL CREPITUS. CLINICAL PHYSICS AND PHYSIOLOGICAL MEASUREMENT, 12 (3). pp. 219-226. [Journal article]
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An optical method to measure directly small displacements of the patella has been developed. Light from a helium-neon laser was reflected from a plane mirror taped to the skin over the patella to a glass plate which generated a set of fringes by interference of light reflected from the front and rear surfaces of the plate. The movement of the fringe system was detected using a photodiode. The optical measurements of displacement were compared with those deduced from an accelerometer attached to the same joint. The method was found to be capable of detecting patellar displacements in the range from 20-mu-m to 180-mu-m.
|Item Type:||Journal article|
|Faculties and Schools:||Faculty of Life and Health Sciences|
Faculty of Life and Health Sciences > School of Nursing
|Research Institutes and Groups:||Institute of Nursing and Health Research|
Institute of Nursing and Health Research > Managing Chronic Illness
|Deposited By:||Professor George Kernohan|
|Deposited On:||02 Jul 2010 10:30|
|Last Modified:||23 Jul 2012 14:52|
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