Posterior Lumbar Interbody Fusion using Laminar Bone Block

Shin, Byung Joon; Kim, Kyung Je; Ha, Sang Sun; Chung, Sang Hoon; Kwon, Hee; Kim, Yon Il

Abstract

STUDY DESIGN: This is a retrospective study analyzing the results of posterior lumbar interbody fusion(PLIF) using laminar bone block and pedicle screw instrumentation.
OBJECTIVES
To analyse the clinical and radiological results of PLIF using laminar bone block to evaluate whether this method is clinically valuable.
MATERIALS AND METHODS
From March 1997 to February 1998, twenty three patients were treated by PLIF using bone block obtained from spinous process, facets and lamina. All of the patient were followed up over 12 months clinically. The mean age was 49 years and mean follow-up was 13.6 months. The clinical results were evaluated by Kim's criteria and adiological union, subsidence of disc space and change of lordotic curve were assessed by simple X-ray.
RESULTS
The satisfactory clinical result rate was 82.6% and radiological union rate was 92.3%. The mean subsidence of disc space and change of lordotic curve were 2.0 mm and 2.2 degrees. There were four complications : two minimal dural tear, one pedicle screw breakage and one superficial infection.
CONCLUSION
PLIF using laminar bone block showed acceptable radiological union rate and clinical results. It could be a good alternative to obtain bony union without taking bone graft from the posterior ilium in various spinal lesions.