Pelvic girdle pain and relevance of ASLR testing: A ... - Cindy Verheul

women with pelvic instability. In this study, this is already determined however the population
is a bit on the small side. Anyway the study did illustrate a good indication for a follow-up
research.
Looking further to the results of this hypothesis, there is a high percentage of women with a
negative score on the ASLR test (80%). Of this group of women, two women scored
negative on the other tests for pelvic instability and positive on the DPQ. Here can be said
that these women probably suffer from pelvic pain instead of instability because they had no
positive score on any of the functionel tests.
However in this group of women (negative ASLR) there are women who score positive on
the DPQ and on other tests for pelvic instability. The percentage here is 44%. This shows
that at least there is a high percentage of women experiencing symptoms and also actually
limited in tested strength movements. Is there then pelvic pain or pelvic instability ? The
strengths tests were all performed with ad without compression. The compression causes an
increase in the force closure. This has the effect that there is more stability to the pelvis.
Assuming this it would mean that if these additional instability tests would be added to the
pelvic instability test battery, these women would be diagnosed pelvic instability which would
be missed if only the ASLR test would be carried out.
Several studies where O'Sullivan took part illustrate that compression contributes to
normalizing the coordination of the muscles, strength and sequence of contraction for
women with pelvic instability. (P. O'Sullivan et al. 2002 DJ Beales et al 2010, Hu et al 2010)
An improper movement pattern may create pelvic instability, if as a result of pregnancy the
pelvis gets more mobile. (Mens January 2009) An improper movement pattern may exist for
women who do a lot of horse riding as this makes excessive use of the adductors. The
contraction of the adductors, depending on the angle at which they are contracted, cause hip
extension or hip flexion. Functional seen adductors are rarely used as solely adductors. In
particular, the adductor magnus has an extension function. (Richter & Hebgen nd). At a
fixation of the leg (in standing position fully supporting on the leg) forces are exerted on the
ilium, as the ilium is because the ilium is the juncture of these muscles. In case of instability,
as a result of these forces, a movement in the hip joint will be created, resulting in also
movement in the SI joint. In such a case the test results might be influence because in a
lying position the contraction of the adductors, which are more trained, give a positive score
on the instability indicating test indicates associated with extension.
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