Below is a list of our most commonly asked questions. We hope they help clear up any confusion you may have about our products. If not, feel free to send us your question via the form below.
Q: How do you use the instrument to measure different joints that have different starting positions (neutral), like the shoulder, knee and ankle?
A: This device is unique in that you can set relative zero at any point in the rotation of the blades. The concept to grasp to master the device is to learn to set relative zero at the neutral or starting point for each joint being measured. The neutral or starting point can vary depending on the joint. So for example, the starting point (neutral) for shoulder flexion is the arm at the side, starting point (neutral) for the elbow or knee is the limb in full extension and the starting point (neutral) for the ankle dorsiflexion/plantarflexion is the foot at a 90 degree angle to the lower leg. So you must find the starting point (neural) for a joint, hit the “Zero” button, rotate the blades and measure a joint in degrees. To measure the shoulder close both blades and hit “Zero” and measure. To measure the elbow and knee fully open both blades, hit “Zero” and measure. To measure the ankle close both blades, hit “Zero”, rotate to 90 degrees, hit “Zero” a second time and measure.
Q: Do I have to remember to turn off after each use?
A: Unit powers off after 5 minutes of nonuse.
Q: Can I clean it after each patient use without damaging the electronics?
A: Unit is designed to be cleansed with all types of hospital sanitizers wipes, but cannot be submerged in any liquid.
Q: Do I have to set “zero” every time I turn on the device?
A: Nope. Unit remembers last “Zero” setting.
Q: How long will a battery last?
A: One year of normal use.
Q: What kind of battery does this take? Is it replaceable? If yes, where can you buy extra batteries?
A: Yes. The battery is replaceable (it's a small 3-Volt Lithium watch battery). It comes with an extra battery in the packaging. You can also buy extras at any store that sells batteries.
Q: Can you easily measure all joint ranges? I'm an OT, so I measure upper body range. Does it come with a booklet, for measuring, at all?
A: Nope, no booklet or instructions. It is very simple to use, however. This is just a lot simpler than the old manual instruments.
Q: How large are the numbers in the digital display?
A: The numbers are 3/8 of an inch in height. They are very big and easy to read.
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