The brief

Analyst view

• Össur became Embla Medical in April 2024 (ticker EMBLA, Nasdaq Copenhagen); Össur stays the product brand.
• Power Knee first appeared in 2006; a lighter generation with a 25-hour battery launched in February 2022.
• In April 2025 Medicare created code L5827 for electromechanical knees like the Power Knee.

Technical approach

As reported

Powered joints

Motors that add energy, not just brake

Most bionic knees only vary resistance; Össur's Power Knee uses a motor to push the user up stairs and out of chairs.

Adaptive control

Microprocessors that read gait

Onboard sensors track speed, cadence and terrain and adjust the joint in real time, step by step.