Last Updated: May 2026 | Written by Joel Smith, inventor of the turning knee scooter (2006) and the Freedom Leg hands-free crutch (2009)
The five most useful tools for lower limb injury recovery are: 1) the Freedom Leg, a hands-free crutch that transfers weight to the upper thigh; 2) the turning knee scooter, ideal for smooth-floor indoor use; 3) the iWalk, a budget hands-free option that requires you to keep the knee fully bent; 4) the walking boot (CAM walker) for protected weight-bearing once your surgeon clears it; and 5) traditional crutches, useful only as a short-term discharge bridge. The right tool depends on your injury, your recovery phase, and whether you have stairs in your home.
In 2006, I built the first turning knee scooter in my garage. Earlier knee scooters had four fixed wheels — to change direction, you had to lift the front of the device and pivot it. My design added a real steering system, and within five years it became the global standard for non-weight-bearing recovery. I should have been satisfied. But I kept watching patients struggle with stairs, narrow hallways, and the simple act of carrying a coffee cup — and in 2009, I built something better. The Freedom Leg, a hands-free crutch, is my second invention. It's also why this list isn't ranked the way most patient-recovery articles rank these tools.
Most lists put crutches first because that's what hospitals hand out. I'm putting them last — because that's where they belong for almost everyone past the first week.
Here's the honest ranking, with what each tool is actually good for, what it costs you, and when to use it.
#1 — The Freedom Leg (Hands-Free Crutch)
Best for: Non-weight-bearing recovery from foot, ankle, or Achilles injury. Stairs. Carrying things. Cooking. Working. Living a life.
The Freedom Leg is a hands-free, FDA-registered Class I medical device that straps to your thigh and transfers your full body weight to the upper thigh — bypassing the knee, the armpits, and the wrists entirely. Your injured foot rests one inch off the ground, fully unloaded, while you walk on your good leg with both hands free.
I designed it for the patient I kept seeing on knee scooters: someone competent and active, sidelined for 6 to 12 weeks, who needed to climb the stairs to their bedroom and didn't want to be a passenger in their own house. The Freedom Leg works on stairs. It works carrying a bag of groceries. It works for the patient who needs to keep working a desk job, cooking dinner, or picking up a toddler.
What it costs: The Freedom Leg is the only hands-free crutch with established insurance reimbursement. Most patients are typically covered by insurance and pay between $0 and $200 out of pocket depending on their plan. Current coverage details are on freedomleg.com. (Knee scooters are generally not covered by insurance.)
Limits: Requires you to bend the knee forward about 20 degrees while wearing it — a small amount, comfortable for most patients. Not appropriate for injuries above the knee. Like any new mobility device, the first day of fitting takes some adjustment — most patients are walking confidently by the end of week one.
Learn more about the Freedom Leg →
#2 — The Knee Scooter
Best for: Smooth-floor indoor recovery, short distances, patients who can't tolerate any device that loads the thigh.
I invented the turning knee scooter in 2006. Knee scooters existed before mine — but the earlier four-wheel designs didn't steer, so the user had to lift and pivot the device every time they wanted to change direction. My design added a real steering system, and that's what made the knee scooter genuinely usable for everyday recovery. It solved a real problem: crutches are exhausting and dangerous for the elderly, the heavy, and anyone with upper-body weakness. The knee scooter rests your shin on a padded platform, and you push along with your good leg. It's stable, intuitive, and easier to learn than any other mobility device on this list.
For the right patient — typically a post-surgical foot or ankle case, recovering at home with smooth floors and no stairs to navigate — the knee scooter is genuinely great. I'm proud of it.
What it costs: Knee scooters typically rent for $30 to $50 per week or buy for $100 to $300. Insurance does not generally cover knee scooters — this is a meaningful difference from the Freedom Leg, which is typically covered.
Limits: Stairs. Carpet. Narrow hallways. Doorways. Carrying anything (your hands are on the handles). Outdoor uneven terrain. Loading the device into a car. Patients whose knee can't comfortably rest on the padded platform. The scooter is a fantastic indoor tool — it's a poor everyday-life tool.
#3 — The iWalk Hands-Free Crutch
Best for: Budget-conscious patients who can comfortably bend the knee deeply, have no knee injury, and don't need stairs to be a daily problem.
The iWalk is the most well-known competitor to the Freedom Leg. Like the Freedom Leg, it's a hands-free device — but the design is fundamentally different. The iWalk requires the patient to kneel on a flat platform with the lower leg bent backward at roughly 90 degrees, transferring weight through the shin and the front of the knee.
For a patient with a healthy knee, normal flexibility, and a foot or ankle injury, the iWalk can work. It's typically less expensive than the Freedom Leg, which matters for patients without insurance coverage.
What it costs: Around $150 to $200 retail. Generally not covered by insurance.
Limits: Requires you to keep the knee fully bent at 90 degrees the entire time you're standing — uncomfortable for many patients, impossible for patients with knee arthritis, knee injuries, or limited flexibility. Loads the front of the knee directly, which can be problematic. Less stable on uneven surfaces. Stairs are difficult. The iWalk is a real product with real users — but the deep-bend requirement filters out a meaningful portion of post-surgical patients.
#4 — The Walking Boot (CAM Walker)
Best for: Phase 2 recovery — once your surgeon clears you for protected weight-bearing.
The walking boot, sometimes called a CAM walker, is not a mobility device. It's an immobilizer. It locks your foot and ankle in a controlled position so the injured tissue can heal under load. Most surgeons prescribe one for the second phase of recovery, after you're cleared to put weight on the leg.
The boot is genuinely essential — almost every lower limb injury patient ends up in one. But it's a poor mobility solution by itself. Walking in a CAM boot is slow, clunky, and creates a noticeable limb-length discrepancy that often requires a heel lift on the opposite shoe to prevent hip and back pain.
What it costs: $80 to $150 retail. Often supplied directly by the surgical team and covered by insurance as part of the surgical episode.
Limits: Not designed for non-weight-bearing recovery. Can't replace a hands-free crutch or a scooter during the NWB phase. Walking long distances in a boot is genuinely tiring — many patients pair the boot with a Freedom Leg for the first weeks of weight-bearing return-to-activity.
#5 — Traditional Crutches
Best for: The first 48 hours after discharge, while you figure out a better option.
Crutches were invented in ancient Egypt. 3,500 years later, hospitals still hand patients two sticks and say "good luck with the stairs." This is the discharge default — not because it's the best tool, but because it's the cheapest tool the hospital can stock.
I won't be diplomatic here. Crutches are bad. They put your full body weight on your armpits and wrists. They're dangerous on stairs. They make it impossible to carry anything. They're exhausting after even short distances. Published research on crutch non-compliance is consistent: most patients abandon their crutches faster than their doctor recommends, often putting weight on the injured leg too early because the alternative is so miserable.
What it costs: $20 to $40 retail. Often supplied by the hospital at discharge.
Limits: Almost everything. The one thing crutches are genuinely good at is being a 48-hour bridge while the patient researches a better option. If you've been on crutches for more than a week and you have weeks of non-weight-bearing recovery ahead, you almost certainly should be using one of the four tools above.
Comparison Table
| Tool | Hands free? | Works on stairs? | Insurance coverage | Best phase |
|---|---|---|---|---|
| Freedom Leg | Yes | Yes | Typically covered by insurance | Full NWB phase, weeks 1–12 |
| Knee Scooter | No | No | Generally not covered | Indoor only, weeks 1–6 |
| iWalk | Yes | Difficult | Not covered | NWB phase if knee tolerates deep bending |
| Walking Boot | N/A (immobilizer) | Yes (slowly) | Covered with surgical episode | Phase 2 — protected weight-bearing |
| Crutches | No | Dangerous | Hospital-supplied | First 48 hours only |
How to Choose for Your Specific Recovery
If your surgeon has prescribed 6 to 12 weeks of non-weight-bearing recovery and you have stairs in your home, the Freedom Leg is the most versatile tool on this list. If you're in a single-story environment with smooth floors and you don't need to carry anything, the knee scooter is excellent. If you've already been cleared for weight-bearing, the boot is your tool — but pair it with a hands-free crutch for the first weeks back.
If you're at the hospital right now and someone just handed you crutches, that's fine for the next 48 hours. Use the time to research what comes next. Almost no one should still be on crutches a week later.
Frequently Asked Questions
Q: Which tool is covered by insurance? A: The Freedom Leg is typically covered by insurance — current coverage details and billing information are on freedomleg.com. Knee scooters and the iWalk are generally not covered. Walking boots are typically covered as part of the surgical episode.
Q: Can I use the Freedom Leg if I have a knee injury? A: The Freedom Leg requires you to bend the knee forward about 20 degrees while wearing it. If you can bend your knee that much without pain and your injury is below the knee, it works for most knee injuries — but always consult your doctor first.
Q: What's the difference between the Freedom Leg and the iWalk? A: Both are hands-free crutches. The Freedom Leg transfers weight to the upper thigh and only needs the knee bent slightly. The iWalk requires you to kneel with the lower leg bent backward at 90 degrees, transferring weight through the shin and front of the knee. The Freedom Leg works for a wider range of patients, including those with knee discomfort.
Q: Can I use any of these tools on stairs? A: The Freedom Leg is designed for stair use — both hands are free for railings. Crutches can technically navigate stairs but are dangerous. The walking boot works on stairs slowly. Knee scooters and the iWalk should not be used on stairs.
Q: How do I know which tool is right for me? A: Talk to your surgeon, but also research independently. The mobility device that hospitals supply is rarely the best mobility device for your specific situation. The right tool depends on your injury, your home environment, your weight-bearing status, and how active you need to be during recovery.
Joel Smith is the inventor of the turning knee scooter (2006) and the founder of Forward Mobility, which manufactures the Freedom Leg hands-free crutch. He has spent 20 years designing devices for non-weight-bearing recovery.
