My sacrum has recently started “flipping” into an awkward rotation causing the entire pelvic bowl to sort of twist (if that makes any sense?!) and thusly creating some major imbalances, muscle spasms, etc etc… Its as if you held me by the hips (illiacus) and tipped one side down (anterior side rotates inferior, posterior rotates superior) while tilting the opposite side up (anterior side rotates superior, posterior goes inferior). I have been a comprehensively trained Pilates instructor, professional dancer & teacher trainer for many many years so I have tapped into all of my experience and resources, yet still having the recurring problem. Have been working with a massage therapist 1x week to get through the fascia and loosen the sacrum to get movement/bloodflow back into pelvis, but still… I am desperately seeking corrective exercises to help me stabilize this wonky pelvis!!!
I would say look at the functional anatomy of what is going on. What causes the body to be pulled in that direction? Then look at the synergist (synergistic dominance) to that muscle and see if there are any imbalances. Are you stable where you should be and mobile where you should be? Do you have symetrical mobility and flexibility? Check out Gray Cook’s new book Movement, I think it will shine some light on what could be happening.
If it were me I would look at any repetitive movements or postures that emphasize this pattern…the way you sleep, sit, is your car seat even, do you lean to a side when you sit, do you sleep on your side….etc. Always look above and below a problem joint, in most non-traumatic issues it is a symtom of a different problem that you are unaware of yet. A message therapist will only give you temporary relief until you find the underlying cause of the shift.