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Lumbopelvic mechanics
  1. B Mitchell1,
  2. E Colson1,
  3. T Chandramohan2
  1. 1Reservoir Sports Medicine Centre, Olympic Park Sports Centre and Centre for Sports Medicine Research, University of Melbourne, Melbourne, Victoria, Australia
  2. 2Reservoir Sports Medicine Centre

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    It has annoyed us for a long time when patients present stating that they have been having “core conditioning/core stabilisation/core strengthening/pelvic stabilisation”, etc. It is also annoying to find the same terms used in peer reviewed scientific articles with the assumption that they mean something to the readers. Maybe they do to others, and we are missing something! We would like to get some discussion going on this and are happy to open the batting.

    We think of lumbopelvic mechanics as three distinct groups:

    1. Intrapelvic stability

    2. Peripelvic stability

    3. Functional stability.

    Intrapelvic Stability

    This is dependent on the transversus abdominis contracting with intact posterior sacroiliac joint ligaments. The anatomy of the transversus abdominis is such that it has a major origin off the iliac crest and inguinal ligament/conjoint tendon to insert into the linea alba. Therefore it and the pelvic floor are the only muscles that give direct closure across the sacroiliac joint. The long lever arm involved gives it great mechanical advantage, …

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