Locate the fibular head
firefly is easiest to place if you are seated and your legs are bent.
How do I locate the fibular head?
To find the fibular head, start at your ankle bone and follow the side of your leg up toward your knee until you reach the round protrusion (or bony spot), which is just below the knee on the outside of the leg.
Why is the fibular head important?
Locating the fibular head is important in order to stimulate the peroneal nerve, which is located here. Stimulating the nerve will cause your feet to twitch (the firefly flutter) causing increased blood flow and circulation to enhance recovery.
Prep the firefly
"Carefully peel off the plastic backing and save for storage and reuse of the device. Take care not to get any debris on the gel as it helps to ensure conductivity and adhesion.
Place the device
Ensure the application area is clean and dry. Place the device so that the raised indicator line (marked with arrows) is positioned at the center of the fibular head.
Confirm the position is correct
The circular head of the device should be positioned towards the front of the leg - with the tail of the device wrapped around to the back of the leg, just below the crease of the knee. When you turn the device on, your foot should begin to twitch.
Turn the device ON/OFF
How to turn the device ON
Quickly press the (+) button.
How to Increase and Decrease levels
There are 7 levels and the light will flash based on the level (2 flashes = level 2). You may need to increase the level to stimulate your nerve and so that your feet will twitch.
Slowly raise the intensity by pressing the (+) button or decrease the intensity by pressing the (-) button. Find a level that is comfortable while also providing a slight "flutter" of your feet.
How to turn the device OFF
After using the firefly™, press the (-) button and hold for 3-seconds to power OFF. After you remove the device, replace the plastic backing for storage.
Secure the device
Use Knee Strap to Secure the firefly
firefly™ works best when used with knee straps. Place the knee strap over the device and gently secure in place.
Exact anatomical positions may vary in certain individuals. If the original location does not produce the desired foot twitch, you may need to slightly adjust the positioning of the device to ensure indicator line is on the fibular head or bony spot.
Fit device with a bent knee. Optimal stimulation of the nerve is achieved when the knee is bent and the peroneal nerve is closer to the surface.
You may need to increase the level by quickly pressing the (+) button.
Use of the firefly knee straps helps to ensure a secure and close fit. Straps are reusable and only need to be purchased once.
In certain circumstances, some individuals may better achieve stimulation by using an alternative location behind the knee. Download our full instructions for use to read about alternative fitting areas.