radiographic contrast media or may be used to insert any surgical instrumentation for disc surgery the curved path may also be used to remove disc tissue in some instances the curved path may be sealed with other means than bone cement like with an type of mechanical stopper e g rubber plug block cover screw or may not be permanently sealed at all and left with a removable closure for the purpose of future access to the disc the advantage of the mechanisms as discussed in the examples is that the annulus fibrosus is left untouched and intact on the other hand the here disclosed methods will rupture an endplate of the disc adjacent vertebra which is of importance for the disc metabolism however in a typical practical scenario of a lumbar disc the endplate will only loose less than 5 of it 39 s active area since the disc has two adjacent endplates the effect is likely be below 2 5 and probably more acceptable than a rupture in the annulus fibrosus which builds a leak and a seed for further future rupture the system for creating a curved disc access path consists of a telescopic tube assembly of for instance one of the kinds as described above examples a motor unit providing the rotation for the drill and a system.