1. Periacetabular Osteotomy: the Bernese Experience by Klaus A Siebenrock, Michael Leunig, and Reinhold Ganz J Bone Joint Surg Am Volume 83(3):449-449 March 1, 2001 ©2001 by The Journal of Bone and Joint Surgery, Inc.

2. Anteroposterior radiograph showing symptomatic bilateral hip dysplasia with femoral head subluxation in a seventeen ‐ year-old girl. Klaus A Siebenrock et al. J Bone Joint Surg Am 2001;83:449 ©2001 by The Journal of Bone and Joint Surgery, Inc.

3. False-profile radiograph of the left hip, showing severely deficient anterior coverage. Klaus A Siebenrock et al. J Bone Joint Surg Am 2001;83:449 ©2001 by The Journal of Bone and Joint Surgery, Inc.

4. Anteroposterior pelvic (Fig. 1-C) and false-profile (Fig. 1-D) radiographs made eleven and one- half and nine years after surgery with an excellent clinical result on both sides. Klaus A Siebenrock et al. J Bone Joint Surg Am 2001;83:449 ©2001 by The Journal of Bone and Joint Surgery, Inc.

5. Anteroposterior pelvic (Fig. 1-C) and false-profile (Fig. 1-D) radiographs made eleven and one- half and nine years after surgery with an excellent clinical result on both sides. Klaus A Siebenrock et al. J Bone Joint Surg Am 2001;83:449 ©2001 by The Journal of Bone and Joint Surgery, Inc.