Mobile Apps

AO Surgery Reference Mobile

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 any given anatomical region, and also assembles relevant material that the AO has published before.

AO Surgery Reference app is available for iPhones, iPods, iPads, and Android phones. Moreover, it can be accessed from almost any other smartphone using a web browser with as address.


AO/OTA Classification of Fractures—Long Bones


Revised AO/OTA Fracture and Dislocation Classification​

A revision of the AO/OTA Fracture and Dislocation Classification was published in the January 2018 issue of the Journal of Orthopaedic Trauma.

Click here to access the new compendium and support materials.

To provide users with a more streamlined, concise, and clinically relevant tool, changes to terminology and typography were made, a review of the codes with regards to frequency and applicability was conducted, paired bones (radius/ulna and tibia/fibula) are now coded individually, all fracture illustrations were newly produced, and a list of universal modifiers and qualifications were introduced.​

The AO/OTA Classification of long bone fractures is the standard classification used by orthopedic and trauma surgeons dealing with skeletal trauma worldwide. This iPhone app is a reference tool that will assist both beginners and experts in classifying any fracture of the long bones. Two pathways have been created to suit the beginner and the expert allowing all surgeons to quickly access the information they need.




rauma Orthogeriatrics App ("Orthogers")


hogers is an educational tool for healthcare professionals managing older adults with a fragility fracture. The primary audience is surgeons and surgical trainees, but the content is also appropriate for other physicians and professionals. The content is presented through a series of decision pathways but is solely for educational purposes (ie, it is NOT designed for making diagnostic or treatment decisions for any individual patient).

Available free of charge for Apple and Android smartphones and tablet devices.