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Clin Biomech (Bristol, Avon). 2002 Aug;17(7):495-8.

Does a pelvic belt influence sacroiliac joint laxity?

Author information

  • 1Institute of Rehabilitation Medicine, Erasmus University Rotterdam, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands. leoniedamen@hotmail.com

Abstract

OBJECTIVE:

To evaluate the influence of different positions and tensions of a pelvic belt on sacroiliac joint laxity in healthy young women.

BACKGROUND:

Clinical experience has shown that positive effects can be obtained with different positions and tensions of a pelvic belt. A functional approach to the treatment of the unstable pelvic girdle requires an understanding of the effect of a pelvic belt on a normal pelvic girdle.

METHODS:

Sacroiliac joint laxity was assessed with Doppler imaging of vibrations. The influence of two different positions (low: at the level of the symphysis and high: just below the anterior superior iliac spines) and tensions (50 and 100 N) of a pelvic belt was measured in ten healthy subjects, in the prone position. Data were analysed using repeated measures analysis of variance.

RESULTS:

Tension does not have a significant influence on the amount by which sacroiliac joint laxity with belt differs from sacroiliac joint laxity without belt. A significant effect was found for the position of the pelvic belt. Mean sacroiliac joint laxity value was 2.2 (SD, 0.2) threshold units nearer to the without-belt values when the belt was applied in low position as compared to the case with the belt in high position.

CONCLUSIONS:

A pelvic belt is most effective in a high position, while a tension of 100 N does not reduce laxity more than 50 N.

RELEVANCE:

Information about the biomechanical effects of a pelvic belt provided by this study will contribute to a better understanding of the treatment of women with pregnancy-related pelvic pain.

Copyright 2002 Elsevier Science Ltd.

PMID:
12206939
[PubMed - indexed for MEDLINE]
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