What are the best ways to treat mal-alignment of l3-l4 in lower back?

Majority non op: Typical mechanical back pain is treated without surgery 90% of the time with occasional use of otc medication, bracing & activity modification along with core strengthening exercises, flexibilty routines & cardio ones-other type is acquired spondylolisthesis with 70% getting same treatment. Surgery is a fusion +- laminectomy for this other 30%. Weight control & not smoking is important too..