Four cases of anterior decompression and fusion for the OPLL in cervical spine and reported here.
The indication of anterior approach is the ossification in two spinal bodies or disc herniation between the ossifications.
One of the problems of this method is its difficulties in the technique, and the other is the necessity of modification for fixation of grafted bone.
Although these cases had some troubles in grafted bone, each patient obtained good results with no neurlogical deficit.
