1. Babisch J, Layher F, Venbrocks RA, Rose I (2004) Biomechanisch fundierte Hüftoperationsplanung mit Hilfe des Softwaremoduls EndoMap (MediCAD). Electromedica, 70/1: 39–46
2. Babisch J, Layher F, Venbrocks RA (2004) Computer assisted planning and navigation using the Navitrack and MediCAD System. In: Stiehl JB, Konermann WH, Haaker RG (eds) Navigation and robotics in total joint and spine surgery. Springer, Berlin Heidelberg New York
3. Bellamy N, Buchanan W, Goldsmith CH, Campbell J, Stitt LW (1988) Validation study of WOMAC: A health status instrument for measuring clinically important patient relevant outcomes to antirheumatic drug therapy in patients with osteoarthritis of the hip and the knee. J Rheumatol 15: 1833–1840
4. DiGioia AM, Jaramaz B, Blackwell M, et al (1998) Image guided navigation system to measure intraoperatively acetabular implant alignment. Clin Orthop 355:8–22
5. Dorr LD, Wan Z (1998) Causes of and treatment protocol for Instability of total hip replacement. Clin Orthop 355: 144–151