I didn't see a description of osteophyte formation or severe degeneration of the facets on what was described on CT.

The last two posts reaction to my suggesting extension has validity in that yes, it will close the foramen, however, they are clearly ignoring your description of pain with sitting too long and bending.

To me this suggests that, yes while the disc is likely compromised by the persons age, it is possibly still behaving dynamically, and indeed flexion, as described by your history, is an aggravating factor and could in all reality make him worse too.

I am not suggesting, as you may be picturing, a full prone McKenzie extension.

Just lay him prone. If things ease a little, then bring him into less than 5 deg extension. If the stenosis is still being contributed too by a dynamically acting disc this position will be tolerated, if, as suggested there is gross degenration then it won't be toleratedand of course you would cease.

To those that so strongly argue for flexion, in light of bending and sitting being aggravating factors, why would you only treat the stenosis and ignore its underlying cause?