What is the difference between direct thermal and thermal transfer printing? There are two thermal printing methods: direct thermal and thermal transfer. Each method uses a thermal printhead that applies heat to the surface being marked. Thermal transfer printing uses a heated ribbon to produce durable, long-lasting images on a wide variety of materials.
(July 2013). An interbody fusion cage (colloquially known as a  spine cage ) is a prosthesis used in spinal fusion procedures to maintain foraminal height and decompression.n interbody fusion cage (colloquially known as a  spine cage ) is a prosthesis used in spinal fusion procedures to maintain foraminal height and decompression.
In September of 1996, the FDA approved anterior interbody cages for use in the disc space, providing a new technique that allows the spine to be fused with less morbidity (e.g. less post-operative discomfort) than in the past. Anterior interbody cages are titanium cylinders that are placed in the disc space.rticle continues below. While most cages are placed through an ALIF, they can also be placed in the back of the spine (posterior lumbar interbody fusion or PLIF) through a midline incision in the back (see Figure 2).