Spondylolisthesis

Overview
Spondylolisthesis is a condition in which a bone (vertebra) in the lower part of the spine slips out of the proper position onto the bone below it.

Symptoms
Lower back pain
Muscle tightness (hamstrings)
Pain in the thighs and buttocks
Stiffness
Tenderness in the area of the slipped disc

Causes
Birth defect
Trauma
Arthritis
Stress fractures
Bone diseases

Diagnosis
Physical examination
X-rays

Treatments
Physical therapy
Activity modification
Anti-inflammatory drugs
Back brace
Surgery

Source: https://www.ncbi.nlm.nih.gov