Fig. 1From: Cup orientation following posterior approach THA – the effect of different visual aids and pelvic supportsA Photograph illustrating pelvic positioning with the Capello Hip Positioner (pegboard with a modification, which is a single extra support over the operated Anterior Superior Iliac Spine). B Photograph illustrating pelvic positioning with the Stulberg Hip Positioner (no pegboard and three-point positioning system)Back to article page