AO Surgery Reference re-launches two modules

The AO Surgery Reference (AOSR), which recorded an all-time high of 254,500 user sessions on AO Trauma modules in June 2018, now features two newly reviewed and revised modules in order to maintain highest quality.

07 August 2018

AO Surgery Reference trauma

The AOSR, which recorded an all-time high of 254,500 user sessions on AO Trauma modules in June 2018, has now launched the revised proximal forearm and femoral shaft modules maintaining the high quality for which the reference is known. The updates include structural improvements and new content:

The proximal forearm module was revised by Peter Kloen and David Ring. Editors were Peter Trafton and Rick Buckley. The femoral shaft module was an editorial review made by Rick Buckley.

New with these re-launches:

  • All content has been revised and adaptions made.
  • Procedures have been added for fracture dislocations to the proximal forearm module.
  • The proximal forearm content is structured addressing the radius and the ulna separately, similar to the revised AO/OTA classification.
  • Both modules include a major upgrade of the descriptions of patient positioning; the patient positioning for all other trauma modules will be updated in similar fashion as they are revised.

AO/OTA Fracture Classification

Moreover, to reduce the dependency between the AOSR navigation/information technology (IT) structure and the AO/OTA classification, the alphanumeric code is left out in the revised modules.

For those looking to classify fractures, a PDF of the revised AO/OTA classification is available at the entry page of any trauma module in the AOSR. Furthermore, download the AO/OTA Fracture Classification app here.

Coming soon

As part of its continuing efforts to expand the AOSR, the team behind it currently is working on the production of:

  • The pediatric forearm shaft and proximal forearm module (authors: Andrew Howard, Peter Schmittenbecher, Theddy Slongo, and editors Fergal Monsell and James Hunter). Publication is planned for December 2018.
  • The first periprosthetic module (authors: Michael Huo, Michael Leslie, Derek Donegan and editor Michael Baumgaertner) covering the hip joint. Publication is planned for 2019.


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