it may or may not be so in your case, but that presentation is often associated with reflexive spasm of the hip flexors (iliopsoas), usually on one side; causative factors in that case can be highly varied, including mechanical, positional even visceral - it all depends
it could depend on what your pelvic position is while doing that: if you are centered correctly, it theoretically shouldn't happen; if the pelvis is tilted posteriorly, it could possibly predispose one for excessive tension of lumbar spinal extensors trying to d a just they are not designed for (holding static postures as opposed to phasic postural correction); but I don't know, I haven't examined you
when it's a nerve, you have parasthesia and loss of motor function (e.g. - drop foot); more commonly, LBP and associated symptoms (e.g. - radiation down the leg)are related to muscle spasm / local or regional connective tissue inflammation;
actually, if I recall, it's possibly 30% to 50% of "normal" pop, depending on age, and the symptomatic pop has a not much higher incidence; meaning a lot of false positives and false negatives on MRI...
that is an area often associated with sacroiliac related pain, although that area is sort of a garbage can for pain associated with compensations in the pelvis for dysfunctions that could originate just about anywhere, locally, regionally or even globally; the "fact" that you don't have radiation doesn't necessarily mean anything either, insofar as you can have local SI pain that then turns into piriformis pain (bec. piriformis seems to be one of the structures that tries to rebalance the pelvis in the presence of dysfunction), and you can get that piriformis related radiation associated with HS and ITB, or not on any given day unpredictably (as opposed to actual nerve root entrapment, which is
more consistent in its occurrence / elicitation;
It's hard to tell exactly where it comes from. It's kept me bedded for two or three days twice in the past 2 years. I'll see a doctor as soon as my med insurance starts with my new job.[/QUOTE]
in general what i tell clients is to try to find the most comfortable position you can - it may be on the back with legs flexed up and / or off to one side, on the stomach with legs straight or one knee up and possibly rotation of the pelvis, or on the side, with legs straight or top knee bent (all these may require use of pillows to get just right); if they can find this, they stay there for varying periods of time, letting the breathing just do what it wants - at some point, typically when the berthing becomes spontaneously slower and more regular (after possible periods of being more irregular), they try coming SLOWLY out of the position (may be there for 10 min or more) and try finding a neutral vertical position if they can do it without pain (or even see if they can sit in mid-line); they may need to repeat this often or a few times to get traction on it; of course, in your case you would need evaluation by a qualified healthcare professional to determine what would be appropriate for you (especially if there is no change after a few times); as such, the above example is for illustrative purposes only, it is not a prescription or suggestion for anything, I cannot guarantee you or anyone else might not have an adverse response if they do something incorrectly...