Hi, welcome to HCM.
Edematous changes are due scoliosis
which is causing pressure on L2L3 vertebra. It is degenerative changes .
All finding are due to scoliosis. Narrow disc space means there decrease in height of disc so that distance between adjacent vertebra decreases.
Bony spur is small outgrowth from vertebra due to degeneration. You need to consult orthopaedician for pain management.
Hope I have answered your query.