“…Margaret L observed patients treated with exercise treatments alone or in combination with other treatments, have a positive effect on low back pain due to spondylolysis and spondylolisthesis. The patients in which conservative treatment failed and continue to have severe pain or neurological disorder or slip progresses over 40 % should undergo surgery, such as spinal body fusion 8,9) . Surgery is indicated for patients who do not respond to conservative treatment lasting more than 1 year, who suffer from persistent pain and neurological symptoms, children who show over 50 % slip, children with an increasing 33 % slip and persistent symptoms, adults with accompanied disc herniation, patietns with occuring adjacent degenerative stenosis and adult patients with spondylolisthesis occuring at the L4-5 level 10) .…”