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Abstract

This study examined the effects of two different frequencies of
Transcutaneous Electrical Nerve Stimulation (TENS) on chronically
painful and stiff osteoarthritic knees. The effects studied were
changes in pain state, changes in stiffness state, changes in
circumference, and changes in range of movement.
Three groups, each of 20 subjects, were given a single 30 minute
application of TENS: the first group received High Rate (Conventional)
TENS, the second group received strong Burst Mode (Low Rate) TENS, and
the third (control) group received a placebo application using the
same active TENS with nonfunctioning leads. Each TENS frequency was
applied for the same length of time, at tolerable intensities, to
the same four acupuncture points around the knee.
Measurements of joint pain and stiffness using Absolute Visual
Analogue Scales were made immediately before and after the TENS
application. Objective measurements of joint circumference and range
of movement were also made immediately before and after the test,
using a tape measure and goniometer respectively. The length of time
the post-test pain and stiffness relief lasted was determined by the
subject reporting when his "normal" pain and stiffness returned.
These reports were collected 24 hours after the test.
The aim of the experiment was to establish the hypothesis that
strong Burst Mode TENS would produce significantly greater and longer
lasting effects than those produced by High Rate TENS.
The results from the study did not entirely support the hypothesis,
but the significance of the findings suggested that continuing
investigation into TENS action is warranted.

Item Type:	Thesis - Unspecified
Authors/Creators:	Grimmer, KA
Keywords:	Osteoarthritis, Transcutaneous electrical nerve stimulation
Copyright Holders:	The Author
Copyright Information:	Copyright 1989 the Author - The University is continuing to endeavour to trace the copyright owner(s) and in the meantime this item has been reproduced here in good faith. We would be pleased to hear from the copyright owner(s).
Additional Information:	Thesis (M.Med.Sc.)--University of Tasmania, 1989
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