Aspenberg, Per, Stuart Goodman, SØRen Toksvig-Larsen, Leif Ryd, and Tomas Albrektsson. 1992. “Intermittent Micromotion Inhibits Bone Ingrowth”. Acta Orthopaedica 63 (2):141-45. https://doi.org/10.3109/17453679209154809.