The effect of dynamic, semi-rigid implants on the range of motion of lumbar motion segments after decompression. - Schulte, Tobias; Hurschler, Christof; Haversath, Marcel; Liljenqvist, Ulf; Bullmann, Viola; Filler, Timm; Osada, Nani; Fallenberg, Eva-Maria; Hackenberg, Lars (European Spine Journal, 2008)