Treatment goal
A number of tools can be appropriate for a given problem, but it doesn't always matter which one you choose.
For example, a TENS unit may be good for reducing knee pain, but it may not help to strengthen weakened leg muscles. Therefore, the pain may go away for a while, but it will return unless you strengthen the leg muscles that stabilise the knee.
But TENS is not the right device for this, sports, rehabilitation ergometers or e-stimulators are the right devices.
In this group, the devices are grouped according to the purpose of the treatment. That is, if you want to strengthen your muscles, for example, choose the muscle recovery group. If you have swelling in your arms after breast surgery, you will find a suitable device in the edema reduction group.