Review classifications and treatment of Isthmic spondylolisthesis.

Abstract

High grade isthmic spondylolisthesis is associated with sacro-pelvic deformity and spino-pelvic disorientation. Spinal Deformity Study Group (SDSG) classification on spinopelvic and sacro-pelvic orientation which relate to treatment. Three important parameters must be concerned in treatment including slippage, sacro-pelvic balance (pelvic incidence, pelvic tilt, sacral slope) and sagittal balance. This article decribes the way to get these parameter from X-ray and treatment of isthmic spondylolisthesis.