The patient a 55 year old male has an anterolisthesis of L5 over Sacrum ( GRADE I) and Disc protrusion at L3-4 . Patient is also a Bronchitis patient.

The patient presents with buttock pain left sided with radiating pain down the whole lower limb. i've not assessed him completely for muscle strength, sensation.. etc.. Pain increases on sitting and walking short distances. Also dyspnoea on exertion.
There are a lot more details needed in this case. It is pretty simple.
1- Does the pain increase with cough & sneeze? as the patient is bronchitic.
2- what does sitting on soft surfaces or on hard surfaces do to his pain?
3- what does supine & prone positions do to his pain.
4- what is his SLR & his other examinations throw up?
What could be giving him his symptoms may be the disc or the listhesis. spondy's are better sitting. central disc protrusions are better walking. stenosis is out because they are better sitting not worse. This seems to be a case of a symptomatic postero-lat disc, from the limited information I have . Reduce it & the job is done. It has to be done carefully though, as the listhesis seem's to be silent now, dont make it symptomatic with your treatment. Core work up will do well at the end of the session, but it should be done without loading the disc.
asha