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Quantitative assessment of position sense at the ankle

A functional approach

Department of Neurology, Northwestern University Medical School, Chicago, IL.

We studied position sense at the ankle in 22 normal subjects to develop a functionally meaningful method of identifying mild position sense loss in individuals with suspected posterior column disease. Subjects were asked to match the angular displacement of a passively positioned reference foot. The subjects tried to improve performance by training sessions and visual feedback during the task. The subjects made accurate matches over a wide range of positions, with an average error of about 3°. These methods can be used to provide a sensitive assessment of proprioception.

Address correspondence and reprint requests to Dr. Shefner, Department of Neurology, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115.

^*Deceased.

Supported by a research grant from the National Multiple Sclerosis Society. Dr. Berenberg was the recipient of an NIH (NINCDS) Teacher-Investigator Development Award.

Accepted for publication March 26, 1986.

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