I looked at the phrase knee walker and tried hard to think of just what the heck it could be and couldn't think of a single thing. So I went looking for the answer and found it.
What knee walkers are is a small scooter assembly that enables people with injuries below the knee to maneuver around while they are recovering. Much more convenient than a crutch and certainly more versatile. Prime examples of this would be a broken ankle or broken foot or an Achilles Tendon injury, something that requires non-weight bearing on a leg.
These scooters enable the patient to still get around while they recover without hurting themselves with the old fashioned crutch devices. Really convenient looking:
As you can see, the injured leg is up in the air, with no weight being put upon the injured portion but still the patient can get around. The one in the picture even has brakes helping the patient to stop if need be.
These knee walkers are for rent, as most injuries of this type are short term injuries. However, if you have a long term need for one of these knee walkers there is a seperate company listed on the website that can sell you one.
Injured? Throw away those old crutches and get yourself more mobility with a knee walker!