[Posterior lumbar interbody fusion (PLIF stand-alone) for chronic low back pain].

Objective: To evaluate the fusion achieved by posterior lumbar interbody fusion--PLIF [B-TWIN, Disc-O-Tech) stand-alone in terms of intervertebral fusion on the basis of radiograph imaging.

Summary Of Background Data: Lumbar fusion is being used to reduce pain and decrease disability in patients with chronic low back pain. Different surgical techniques are available.

[Congenital cervical spondylolisthesis].

Cervical spondylolysis with spondylolisthesis is a complex abnormality involving the posterior elements of the cervical vertebra, and anterolisthesis of the same vertebra. Cervical spondylolysis is defined as a corticated cleft between the superior and inferior articular facets of the articular "pillar", the cervical equivalent of the pars intraarticularis in the lumbar spine. The typical radiological features of this condition are as follows: 1.