Osteonexus: A Fracture Healing System for Space Exploration

NASA's plans to further explore space and establish a manned outpost on Mars before 2030 are dependent on the ability of the crew to remain healthy throughout the multi-year mission. Microgravity induced bone loss and physiological changes pose serious questions about the risk of bone fractures and the body's ability to heal them. The Osteonexus Fracture Healing System is a comprehensive fracture treatment system developed by HPN, a group of five senior bioengineering majors at Rice University. The system incorporates a variety of fixation and healing combinations that may be tailored to different fracture types and situations. Compact packaging of the system in an easily transportable, self-contained kit will make it available in orbit, on orbiting platforms, and on the moon or Mars. Fracture fixation methods include bracing and external fixation, while options for healing enhancement include mechanical loading, ultrasound, and electromagnetic field therapy. The Osteonexus Active Dynamizer, one component of this system, is an external fixation device specifically designed and built by HPN to promote fracture healing in microgravity environments via actively induced micromovements at the fracture site. This report details the driving forces for the design of this system, the components of the system, and the logistical challenges associated with the system implementation.