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Field comparison of l0-g and 1-g filaments for the sensory testing of hands in Ethiopian leprosy patients
Author(s) -
A. J. De Rijk,
Peter Byass
Publication year - 1994
Publication title -
leprosy review
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 43
eISSN - 2162-8807
pISSN - 0305-7518
DOI - 10.5935/0305-7518.19940034
Subject(s) - medicine , leprosy , sensory system , sensation , sensory threshold , stimulus (psychology) , neuritis , protein filament , sensory nerve , audiology , surgery , dermatology , neuroscience , psychology , genetics , psychotherapist , biology , cognitive science
In ALERT's leprosy control programme sensory testing of hands and feet is done with a nylon filament giving a 10-g stimulus, but doubts arose that early partial sensory loss in hands would not thus be discovered. In order to evaluate the relative performance of 1-g and 10-g filaments for sensory testing on the palms of hands, both filaments were used separately in a series of 1,021 examinations on several consecutive occasions in 159 leprosy patients and 97 nonleprosy controls. The 1-g filament was always felt on normal hands and does not lead to false positive findings of nerve dysfunction. If the 1-g filament were used routinely, almost twice as many instances of 'neuritis' would be discovered and treated, if the criterion for diagnosis and treatment of new nerve dysfunction remained as it is for nerves tested with the 10-g filament. It appears desirable to distinguish between testing for early sensory loss and for loss of protective sensation. The two tests may each need their own instrument and separate recording of the results.

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