Algorithm boosts control over robotic leg prosthetic
Summary of the Article: Robotic Knee Prosthetics Show Promise for a Wider Range of Amputees
This article discusses a study demonstrating the potential benefits of commercially available robotic legs for both higher- and lower-mobility amputees. Researchers at the University of Michigan, working with Össur’s Power Knee, found that the robotic leg offered improvements in gait symmetry, reduced tripping risks, and lessened strain on sound limbs and hips.
Key Findings:
* Benefits for All Levels of Mobility: The robotic leg helped those needing walking assistance (like a cane) with all tasks, while those with higher mobility saw the most gait improvement when the researchers used their own control algorithm.
* Evidence for Insurance Coverage: the study provides evidence that could support insurance coverage for robotic knees, which is currently limited due to a lack of demonstrated benefits over advanced passive knees.
* Two Control Approaches: The study tested both Össur’s standard controller (safe and predictable) and the researchers’ own algorithm (focused on mimicking natural limb behavior).
* Focus on Daily Activities: The research focused on common activities like sitting, standing, walking, and climbing, where powered prostheses could offer important advantages.
* Improved Gait & Reduced Strain: Participants experienced a more natural gait and reduced strain on their bodies when using the robotic leg, notably with the researchers’ control algorithm. One participant described it as the closest they’d felt to normal walking with a prosthesis.
the study suggests that robotic knees have the potential to improve the quality of life for amputees by enabling greater activity and preventing overuse injuries.