Mostly non surgical. Lifestyle modifications physical therapy orthotic devices, such as corsets and braces not often surgery?
Conservative. Lower back stress fractures, usually called spondylolysis, are usually treated with non-operative means. Some docs recommend bracing, but others recommend pain-free core lumbar stabilization protocols. These are notorious for not healing, but most patients become non-symptomatic with spondylolysis. The condition may progress to instability (spondylolisthesis) over years or decades.