About AO Surgery Reference
QUICK ONLINE REFERENCE IN CLINICAL LIFE Gain easy access to the award-winning AO Surgery Reference. AO Surgery Reference is an online repository for surgical knowledge. It describes the complete surgical management...
QUICK ONLINE REFERENCE IN CLINICAL LIFE Gain easy access to the award-winning AO Surgery Reference. AO Surgery Reference is an online repository for surgical knowledge. It describes the complete surgical management process from diagnosis to aftercare for all fractures of a given anatomical region, and also assembles relevant material that the AO has published before. It gives access to: . aid in surgical decision making for 353 fracture types . 172 approaches . 1222 surgical procedures . all richly illustrated with more than 30'000 Illustrations and much more. To ensure the quality of the content, it is authored, edited, and peer reviewed by experienced AO Faculty from all over the world, some of which are also well-known textbook authors/editors. This is a relaunch of the AO Surgery Reference app utilizing the same responsive user interface that was released February 2020. The highlights are: . Consistent navigational logic and user experience on all screen sizes . Inclusion of feline, canine, and equine fracture care . Combination of Preparation - Approach - Reduction and Fixation - Aftercare into one step called treatment. . Introduction of a powerful search function, allowing simplifications of the user interface as it replaces previous shortcuts.
Version History Bug Fixes and Improvements: Various bug fixes to enhance stability and performance. Adjustments for a smoother and more reliable app experience. Thank you for your feedback — we're continuously working to improve your experience 4.1.1 05/22/2025 - Fixed sharing via iMessage and E-mail 4.1 07/14/2020 This is a relaunch of the AO Surgery Reference app utilizing the same responsive user interface that was released February 2020. The highlights are: • Consistent navigational logic and user experience on all screen sizes • Inclusion of feline, canine, and equine fracture care • Combination of Preparation – Approach – Reduction and Fixation – Aftercare into one step called treatment. • Introduction of a powerful search function, allowing simplifications of the user interface as it replaces previous shortcuts. 4.0 06/22/2020 This is a relaunch of the AO Surgery Reference app utilizing the same responsive user interface that was released February 2020. The highlights are: • Consistent navigational logic and user experience on all screen sizes • Inclusion of feline, canine, and equine fracture care • Combination of Preparation – Approach – Reduction and Fixation – Aftercare into one step called treatment. • Introduction of a powerful search function, allowing simplifications of the user interface as it replaces previous shortcuts. 3.0 06/18/2020 Usability improvements 2.0.1 04/04/2017 This update will allow for our December launch of: - Pediatric distal humerus, distal forearm, and general concepts - Spinal trauma in C1-C2 as well as sacrum - Scheuermann Kyphosis and Spondylolisthesis - Indications for all hand fractures as well as revised indications for nearly all CMF modules. - Improved navigation of all hand and CMF modules 2.0 11/29/2016 Several minor bugfixes (not reachable module version number area, login) 1.9.1 03/23/2015 New app icon and shortname AOSR iOS8 and 64bit extensions Several minor bugfixes 1.9 01/30/2015 Design improvements Some bugfixes 1.8 09/09/2014 • The app will allow for the very first AOSpine material to be launched December 10, 2014. This is a major milestone in the AO Surgery Reference history. • Additional CMF material will be made available for AOCMF members 1.7 11/25/2013 • Additional CMF modules available: - Congenital deformities - Orthognathic - Postablative reconstruction • Update screen dimensions for iPhone 5 • Bugfix text-sizing on orientation change for iOS 6 1.6 01/31/2013 Hand modules now available: thumb, distal phalanges, middle phalanges, proximal phalanges, metacarpals, carpal bones 1.5 07/05/2012 Foot modules, CMF Dentoalveolar, Acetabulum and Proximal tibia activated. 1.4 02/23/2011 Module CMF Mandible activated. 1.3 12/03/2010 1.0 11/18/2010
Previous Versions
Here you can find the changelog of AO Surgery Reference since it was posted on our website on 2016-09-27 21:14:48.
The latest version is 4.1.1 and it was updated on 2026-06-13 11:15:29. See below the changes in each version.
AO Surgery Reference version 4.1.1
Updated At: 2026-06-13
Changes: Version History Bug Fixes and Improvements:
Various bug fixes to enhance stability and performance.
Adjustments for a smoother and more reliable app experience.
Thank you for your feedback — we're continuously working to improve your experience 4.1.1 05/22/2025 - Fixed sharing via iMessage and E-mail 4.1 07/14/2020 This is a relaunch of the AO Surgery Reference app utilizing the same responsive user interface that was released February 2020.
The highlights are:
• Consistent navigational logic and user experience on all screen sizes
• Inclusion of feline, canine, and equine fracture care
• Combination of Preparation – Approach – Reduction and Fixation – Aftercare into one step called treatment.
• Introduction of a powerful search function, allowing simplifications of the user interface as it replaces previous shortcuts. 4.0 06/22/2020 This is a relaunch of the AO Surgery Reference app utilizing the same responsive user interface that was released February 2020.
The highlights are:
• Consistent navigational logic and user experience on all screen sizes
• Inclusion of feline, canine, and equine fracture care
• Combination of Preparation – Approach – Reduction and Fixation – Aftercare into one step called treatment.
• Introduction of a powerful search function, allowing simplifications of the user interface as it replaces previous shortcuts. 3.0 06/18/2020 Usability improvements 2.0.1 04/04/2017 This update will allow for our December launch of:
- Pediatric distal humerus, distal forearm, and general concepts
- Spinal trauma in C1-C2 as well as sacrum
- Scheuermann Kyphosis and Spondylolisthesis
- Indications for all hand fractures as well as revised indications for nearly all CMF modules.
- Improved navigation of all hand and CMF modules 2.0 11/29/2016 Several minor bugfixes (not reachable module version number area, login) 1.9.1 03/23/2015 New app icon and shortname AOSR
iOS8 and 64bit extensions
Several minor bugfixes 1.9 01/30/2015 Design improvements
Some bugfixes 1.8 09/09/2014 • The app will allow for the very first AOSpine material to be launched December 10, 2014. This is a major milestone in the AO Surgery Reference history.
• Additional CMF material will be made available for AOCMF members 1.7 11/25/2013 • Additional CMF modules available:
- Congenital deformities
- Orthognathic
- Postablative reconstruction
• Update screen dimensions for iPhone 5
• Bugfix text-sizing on orientation change for iOS 6 1.6 01/31/2013 Hand modules now available: thumb, distal phalanges, middle phalanges, proximal phalanges, metacarpals, carpal bones 1.5 07/05/2012 Foot modules, CMF Dentoalveolar, Acetabulum and Proximal tibia activated. 1.4 02/23/2011 Module CMF Mandible activated. 1.3 12/03/2010 1.0 11/18/2010
AO Surgery Reference version 4.1.1
Updated At: 2025-05-22
Changes: May 22, 2025
Version 4.1.1
Bug Fixes and Improvements:
Various bug fixes to enhance stability and performance.
Adjustments for a smoother and more reliable app experience.
Thank you for your feedback — we're continuously working to improve your experience
AO Surgery Reference version 4.1.1
Updated At: 2025-05-22
Changes: Bug Fixes and Improvements:
Various bug fixes to enhance stability and performance.
Adjustments for a smoother and more reliable app experience.
Thank you for your feedback — we're continuously working to improve your experience
AO Surgery Reference version 4.1
Updated At: 2020-07-14
Changes: Jul 14, 2020 Version 4.1
- Fixed sharing via iMessage and E-mail
AO Surgery Reference version 4.1
Updated At: 2020-07-14
Changes: 14 Jul 2020 Version 4.1
- Fixed sharing via iMessage and E-mail
AO Surgery Reference version 1.9.1
Updated At: 2010-11-19
AO Surgery Reference version 4.1
Updated At: 1970-01-01
Changes: 14 июля 2020 г. Version 4.1
- Fixed sharing via iMessage and E-mail
Disclaimer
Official App Store Link
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