1. Development of Bilateral Cam Deformity After Dunn Procedure and Contralateral Prophylactic Fixation: A Periosteal Reaction? by Martin Aepli, Reinhold Ganz, Hans Michael Manner, and Michael Leunig JBJS Case Connect Volume 5(2):e53 June 24, 2015 ©2015 by The Journal of Bone and Joint Surgery, Inc.

2. Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.

3. Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.

4. Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.

5. Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.

6. Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.

7. Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.

8. Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.

9. Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.

10. Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.

11. Follow-up radiographs of both hip joints, showing a gradual development of bilateral cam deformity, first in the left hip (shown on the right) and then in the right hip (shown on the left). Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.

12. T2-weighted gadolinium-enhanced transverse MRI scan of the left hip, made four and one-half years postoperatively, showing an osseous prominence of the anterosuperior head-neck junction in the area of the formerly ruptured periosteal-perichondrial junction. Martin Aepli et al. JBJS Case Connect 2015;5:e53 ©2015 by The Journal of Bone and Joint Surgery, Inc.