Introduction Percutaneous laser disc decompression (PLDD), which be approved by FDA at 1991, representing an minimally invasive surgical technique for discogenic pain caused by protrusion or herniation of the intervertebral disc.
Treatment Principle The treatment principle of PLDD is based on the concept of the intervertebral disk being a closed hydraulic system. This system consists of the nucleus pulposus, containing a large amount of water, surrounded by the inelastic annulus fibrosus. An increase in water content of the nucleus pulposus leads to a disproportional increase of intradiskal pressure....
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