Instead of stiffening part of the spine, in such cases of modern construction, a flexible, deformable DIAM implant (Device for Intervertebral Assisted Motion) is used. This implant takes over some of the loads that run through the spine’s movement segment while maintaining the natural mobility of its individual elements. Relieving the so-called the posterior column of the spine reduces the pressure on the spinal roots, articular processes and the rear part of the shaft, resulting in the correct alignment of the articular processes, restoration of the correct ligament tension, expansion of the pathologically narrowed intervertebral space and stabilization of a given section of the spine.
A very important feature of dynamic stabilization is the lack of stress accumulation in the segments in the immediate vicinity of the stabilized area, which occurs during spine stiffening procedures. Correctly performed by a surgeon with extensive experience in this operation, it widens the intervertebral foramen, i.e. the bone root canal, in which, in cases of stenosis of this canal, the nerve root is compressed and causes pain symptoms similar to those of a disc herniation.
Dynamic lumbar posterior interspine stabilization with the use of an elastic stabilizer – that is dynamic (and the only such implant in the world that meets the conditions for flexibility is the DIAM implant) is, due to its relatively low invasiveness, a method that meets the conditions of MAST (Minimal Access Spine Technique). During implantation, it is not necessary to penetrate the epiphyses and arches of the vertebrae, the body or the spinal canal. There is also no direct contact of the tools or the implant with the neural structures, which means that the risk of failure associated with additional neurological deficits is minimal with a properly performed operation. The ligamentous-muscular anatomy of the posterior column of the spine is also preserved.