Overview of the Anatomy of Deep System Stability

Mark shows pathological and optimal relationship of the diaphragm with pelvic floor for optimal low back stability. Pathological orientation is termed ‘scissors syndrome’ because the axes are open like a pair of scissors. Optimal stability is when the axes are horizontal. This happens when the chest position travels down as the spine lengthens to activate intra-abdominal pressure.

Mark shows the relationship between the orientation of the fibres of the diaphragm with the transversus abdominus. Diaphragm has vertical orientation and TA is horizontal. Under anatomical dissection, these two structures are continuous with each other.

Gravity perception is knowing up and down from a living perspective. This is our most basic perception, but we get next to no education about this living dynamic perception! Let alone reinforcement of its importance.
Multifidus is the posterior aspect of the deep system. and spans the lumbar spine segmentally.
Psoas can work effectively when the low back is stabilised through intra-abdominal pressure.
When we consider our anatomy from a breathing perspective, we have inhalation and exhalation breathing muscles.

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