Hi Cat,
Interesting case to look at. Some questions I have:
1. You mention that he has lower back pain but then go on to point out traps and rhomboid issues - does he get pain higher up?
2. What are his spinal curves like - I am going to hazard a guess and say he has increased lordosis and decreased kyphosis (just guessing!)
3. Is he able to get any flexion in his spine at all? e.g. can he go onto all fours and put his buttocks on his heels (like a muslim prayer position)?
4 What are his PPIVMs into flexion and extension like?
5. When he tries to FF, is there any L/S motion?
6. Were his PA glides stiff because it was "joint-locked" stiff or because of "spasm" stiff?
7. You haven't mentioned if you think there is a disc or any neural involvement. Any sciatica or nerve root signs?
The reason for the questions are because i think this guy is compressing his L/S through overactive spinal extensors. He probably has overactive external obliques as well. Why this has happened i don't know.
The lower thoracic / upper lumbar region is known for its change in convexity and therefore placing these bones under high loads of stress. He is probably loading unevenly now therefore sore on unilateral PA.
I think the solution lies in regaining segmental ROM. I wouldn't bother with massage or anything except to release them enough for you to restore whatever motion is lost (i am guessing flexion - that's why PA in prone wasn't too bad but stiff because you were probably at EOR extension).
Once movement has been regained, teach control of the L/S with co-contractions of TrAb and Multifidus (beware how people activate this muscle - most people use their obliques and not their TrAbs). Then resotre controlled F and E with neutral spine and work into segmental motion.
Good luck and let us know how it goes...
No doubt others will post about MacKenzie method or other generic assessments but i think this guy has a control issue. The information above is based on Peter B. O'Sullivan's work on the classification of chronic low back pain. You can find his articles on medline.
Thanks