Written and maintained by CASRAI Editorial Board
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A knee walker (also sold as a knee scooter) is used by putting the injured leg on a padded knee rest, holding the handlebar, and pushing with the other foot. Before you move, set the brake, get balanced, then release it. The numbered steps below follow one manufacturer’s published safe-operation guidance; your own model’s owner’s manual and your treating clinician’s instructions come first.
General product information only, not medical advice. It does not replace instructions from your surgeon, physical therapist or the manufacturer’s owner’s manual for your exact model.
For a parts list and a pre-ride inspection, see our guide to knee scooter parts. For other mobility aids, see what a walker is, what crutches are and what a cane is.
What you need
- A knee walker that has been assembled as the manufacturer instructs, with the owner’s manual to hand.
- A working hand brake.
- Time to adjust the knee pad and handlebar before the first ride (see below).
- A walking surface you can see clearly, with your head up so you can spot obstacles.
Nuts and bolts should be checked periodically after use and re-tightened as appropriate (Kneerover, checked 30 October 2026).
Steps
Set the height first
Adjust the knee pad and the handlebar until you can stand upright and comfortable. Kneerover describes the handlebar at about waist height, hips level, the uninjured foot flat on the ground, and the injured leg supported at 90 degrees on the pad.
Mount, move, slow and turn
- Apply the hand brake fully. Do this before you put weight on the unit.
- Place the injured leg on the knee pad and get balanced with your hands on the handlebar.
- Release the brake only once you are balanced.
- Push with the uninjured foot, like a child’s scooter. Glide, then push again as the walker slows.
- Keep your knee on the pad and your weight centered. Avoid reaching or stretching away from the unit.
- Slow with the hand brake. Your good leg can also help slow the walker.
- Brake to a slow, controlled speed before you turn. It is possible to tip a knee scooter by turning with too much speed.
- Go downhill with extra caution, at a safe speed, using the brake and your good leg.
The manufacturer’s own wording is that knee walkers are not high-speed vehicles. Source: Kneerover, “Safely operate a knee walker”, checked 30 October 2026.
What can go wrong
A 2023 prospective cohort study from a single foot-and-ankle surgeon’s community clinic (Walsh et al., Journal of Orthopaedic Surgery and Research 18:649) followed orthopaedic patients using knee scooters. Of 118 patients analyzed, 37% (44 of 118; 95% CI 29-46%) reported a fall and 15% (18 of 118; 95% CI 10-23%) reported an injury. Of the 18 injured, 17 reported a prolonged recovery averaging 7 weeks, and none needed a second surgery.
Those patients received general in-clinic training based on the manufacturer’s instructions. The authors wrote that all patients would benefit from education on knee walker use, and called for studies of whether education or screening reduces injuries. The study does not say where or how the falls happened, so it does not show that any particular surface or maneuver caused them.
Practical reading of the manufacturer guidance
| Risk | What the manufacturer says to do |
|---|---|
| Tipping on a turn | Brake and slow to a controlled speed before turning. |
| Moving before you are steady | Brake on, leg on pad, balanced, then release. |
| Losing balance by leaning away | Keep the knee on the pad, weight centered, no reaching. |
| Speed on a downhill | Extra caution, safe speed, brake and good leg. |
| Loose fittings | Check nuts and bolts after use and re-tighten as appropriate. |
When to get professional help
- Your surgeon, physical therapist or treating clinician decides whether and how long a knee walker is used; this page gives product information only.
- Ask for a hands-on walk-through of your model; the study above notes that patients received only general training.
- Stairs, curbs, steep slopes and weight limits vary by model. Follow your owner’s manual and your clinician’s instructions for them.
FAQ
Is a knee walker the same as a knee scooter?
Yes, in general use the two names describe the same device: a wheeled frame with a knee pad and handlebar. See knee scooter parts for the components.
How high should the handlebar be?
Kneerover describes it at about waist height, with hips level, the uninjured foot flat on the ground and the injured leg supported at 90 degrees on the pad. Follow your own model’s manual for its adjustment range.
How do I stop a knee walker?
Use the hand brake; the good leg can also slow it. Apply the brake fully before you mount.
Can I use a knee walker on stairs?
Stair use depends on the model and your clinician’s advice. Follow the owner’s manual and your treating clinician; this guide does not give a stair technique.
How is a knee walker different from crutches or a walker?
A knee walker supports the injured leg on a pad and rolls as you push with the other foot. Crutches and a standard walker are lifted or stepped with the arms instead. A CAM boot is worn on the foot and is a different device.
Sources
- Kneerover, “Safely operate a knee walker” (manufacturer guidance), kneerover.com/pages/safely-operate-a-knee-walker, checked 30 October 2026.
- Walsh JP et al., “Orthopaedic knee scooter-related injury: prevalence and patient safety perception in a prospective cohort with exploratory risk factor analysis”, J Orthop Surg Res 2023;18:649, PMC10474665, checked 30 October 2026.
