Latest release takes OSapp virtual osteosynthesis learning platform to a new level

More than 100 new units in 32 lessons, a new structure representing the novel knowledge hub concept, a fresh look, and an improved user experience—all this and more awaits you in the latest release of OSapp, the AO’s interactive, virtual osteosynthesis software tool and learning platform.

OSapp content is organized as an expanding knowledge hub designed to illustrate and explain the biomechanical principles underlying bone healing and fracture fixation. Interactive virtual models, based on existing and validated biomechanical parameters, facilitate the learning and, importantly, better understanding, of the biomechanical principles, said AO Research Institute Davos (ARI) Biomechanics and Modeling Focus Area Leader Peter Varga, PhD. The development of OSapp continues to be supported by ARI and the AO’s Strategy Fund. The OSapp Medical Advisory Board (MAB) has prioritized collaboration and integration with other highly regarded AO educational fora, including AO Milestones and the AO Education Institute through the Residents Education Task Force, and further evolution of close links with the AO Surgery Reference content.


The MAB, led by Simon Lambert MD, emphasized that OSapp aims to complement and augment education in biomechanics through knowledge delivery, virtual simulations, and case-based exercises; it is a learner-based educational multimodular program designed to enhance the comprehension of relevant biomechanical principles fundamental to fracture care. The knowledge hub comprises four main themes (basic principles; the principles of internal fixation; the principles of external fixation; and special topics [eg, complementary educational material for the AO Skills Lab stations]), together with a free configurator and case-based biomechanics challenges, including cases derived from the ICUC library.

The latest OSapp release will be demonstrated in the exhibition at the AO’s flagship annual event, the AO Davos Courses, December 4–16, 2022. OSapp’s new user interface is enriched by a navigation tool supporting the new knowledge hub structure, which emulates the user-friendly AO Surgery Reference style and includes an intuitive search function.

“Importantly, this latest release is easier to use because the navigation is much better configured to the way users think,” said Dominic Mischler, a project leader on ARI’s Biomedical Development team.


OSapp will be piloted to participants during two AO Trauma educational events at the AO Davos Courses 2022. It will be used to augment educational content throughout the AO Trauma Course—Basic Principles of Fracture Management for Swiss Residents, including a case-based biomechanics challenge as part of Prof Reto Babst’s lecture on biomechanical principles and pitfalls. During that course, OSapp will also augment faculty presentations with animations illustrating biomechanical principles and it will also complement four Skills Lab stations with virtual content. Moreover, during the second week of the AO Davos Courses, OSapp will also augment the Skills Lab portion of the AO Trauma Course—Basic Principles of Fracture Management.

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