AOSR iPad app will be discontinued

Due to its marginal use and high maintenance cost, the AOSR iPad app will be discontinued in August. Instead you may access the AOSR through the iPhone/Android app, or a web browser.

To use the AOSR without the app on your iPad:

  1. Go to
  2. If preferred, you can now choose to use the desktop version on your iPad at the bottom of the screen
  3. If you want an AO Surgey Reference icon on your iPad, just add a link button to your home screen, here is how to do it

Additional credits

First edition (2015)

Dr Peter Trafton (Editor)
Rhode Island Hospital
Providence, USA

Prof Dr Matej Cimerman
University Clinical Centre Ljubljana
Ljubljana, Slovenia

Dr Peter Kloen
Orthopedic Surgery
Academisch Medisch Centrum
Amsterdam, Netherlands

Dr Rahul Banerjee
Orthopaedic Surgery
UT Southwestern Medical Center
Dallas, USA

Prof Dr Tim H M Pohlemann
Klinik für Unfall, Hand und Wiederherstellungschirurgie
Universitätsklinikum des Saarlandes
Homburg, Germany

Dr Matevz Tomazevic
University Clinical Centre Ljubljana
Ljubljana, Slovenia

Project manager: Lars Veum

Illustrators: Tamara Aepli, Ruth Angliker

Ulf Culemann is gratefully acknowledged for his contribution to the material.

Dankward Höntzsch is gratefully acknowledged for revision of the external fixation treatment options (2016, with Steve Krikler as editorial consultant).

The authors and editor of the pelvic ring module gratefully acknowledge and recommend Fractures of the Pelvis and Acetabulum, by Marvin Tile, and colleagues. The fourth edition of Tile’s original book was published in March 2015 by the AO Foundation and distributed by Georg Thieme Verlag. Volume 1, The Pelvic Ring, Co-edited by Tile, James Kellam, and Mark Vrahas, is a lucid and comprehensive summary of up-to-date knowledge of pelvic ring injuries.



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