Abstract
Grade IV spondylolisthesis in Meyerding classification is a special pathology given the particular anatomy, biomechanics, clinical presentation or surgical options.
The clinical presentation may include a vertebral instability syndrome with various degrees of presentation but also radicular syndromes and caudaequina syndrome.
Surgical treatment is a difficult attempt, and the available techniques are subject to controversy. The objectives of surgery are decompression of the neural elements, lumbar spine alignment, lordosys correction, with a normal disc space, and calibration of neural foramina. The gold standard is represented by reduction and fusion, but as an alternative option is “in situ” fixation, if the first attempt failed.







