Hey Sean
Based on that one can never be sure without a proper examination. However it sounds like it could be trigger points and over activity of the Quadratus lumborum muscle on one side of your back. Or it could be one of the other closely related muscles. Hre is a site showing the quadratus lumborum muscle. THe Xs show where the tender points in the muslce are and the red shading shows common areas of where the pain radiates to.the muscle pain is deep in the left side of my back in the kidney area. when i first got this injury i had the pain in my back and also a sharp shooting pain in running down my buttock at in my hamstring. i recieved chiropractic treatment for nearly two years, this treatment cured the sharp pain runing down my leg, but ive still got this dead pain deep in my back.
http://buckheadbodyworks.com/index.p...rticle&view=34
Trigger points may arise in a chronic problem due to muscle imbalance - often the case is the quadratus lumborum is overactive and too tight and antagonist groups may be weak and lengthened out.
A good approach to this is being assessed for muscle imbalances - so a thorough assessment of your posture, alignment and muscle activity in your trunk and legs. The treatment often involves:
- learning how to stop switching on the over-active muscle in your activities - sometimes this can be simply taught and sometimes it takes quite some learning. For example, what is it that you are doing in your training and general movement that makes the muscle overactive.
- strengthening up the muscles that aren't work like they should
- some lengthening exercises for the tight/overactive muscles
This is a detailed approach and you need to see a physio who is interested in this approach. Ask around if the physio has done some courses with Shirley Sahrmann's approach (movement impairment syndromes). there are other methods that are somewhat similar but this is the method I am most familiar with
If this is what you have this approach may be more effective in the long therm than trigger point therapy as it addresses the reasons for the trigger points in the first place. It takes some time and commitment to the specific remedial exercises but you sound like the motivated sort anyway.