Exercise Equipment for Bad Knees: Guide for Low-Impact Workouts

If you can still bear weight, a recumbent stepper or recumbent bike is the safest starting point for most low-impact knee training. If you cannot bear weight on the leg at all, an arm-only ergometer keeps you training without moving the knee. Either way, expect pricing well above typical home-gym cardio equipment, since this lineup is built for physical therapy use.

This article covers general, non-diagnostic information about equipment types. It is not medical advice, does not diagnose any condition, and does not promise pain relief. Ask a physical therapist, orthopedist, or other qualified clinician which motion and intensity are appropriate for your specific knee before you start a new exercise routine, especially after surgery or a diagnosed condition like osteoarthritis.

Looking for the specific rehab-grade machines a physical therapy clinic would buy? See our buyer's guide to low-impact cardio machines for bad knees and hips, sorted by how much leg motion each machine actually requires.

Deciding specifically between a stepping motion and a pedaling motion? See Recumbent Stepper vs Recumbent Bike: Which Should You Buy for Rehab?

Quick Decision Summary

• Best starting point for most weight-bearing knee pain: a recumbent stepper or recumbent bike. Both keep the joint moving through a controlled range without ground-impact forces.
• Best if you cannot bear weight on the leg at all: an arm-only ergometer, which trains cardio fitness through the arms with no leg motion required.
• Best for a fuller-body session: a seated recumbent elliptical, which adds arm handles to the leg motion for upper-body work too.
• Choose a cushioned treadmill instead if your clinician has cleared you for weight-bearing walking and you specifically want a walking-based workout, understanding that walking is still more weight-bearing than any seated option on this list.

Comparing Low-Impact Equipment for Bad Knees

Equipment Type	Price Range	Best For
Recumbent stepper / recumbent bike (PT grade)	$2,400–$5,900 depending on model	Weight-bearing knee or hip rehab, general low-impact cardio
Seated recumbent elliptical	$4,150–$4,450	A fuller-body session that adds arm work to the leg motion
Arm-only ergometer	$6,800–$7,200	Non-weight-bearing restrictions, can transfer to a seat
No-transfer active/passive trainer (arms, legs, or both)	$2,100–$2,300	Wheelchair users who cannot transfer to a seated machine at all
Cushioned treadmill	$4,050–$6,200	Cleared weight-bearing walking; still more impact than a seated machine
Rowing machine	$875 to $975 (Body-Solid R300)	Full-body pulling motion with a hip hinge; more knee flexion than the seated pedaling machines above
Resistance bands	Roughly $15 to $230	Isolated strengthening around the knee with a fully adjustable range and load
Stair climber (true stepping machine)	Roughly $3,600 to $8,000	Standing, weight-bearing, repeated knee flexion; a different motion than the seated recumbent stepper above

The rowing machine price above is WorkoutHealthy's own listed price for the Body-Solid R300. The resistance bands and stair climber prices are WorkoutHealthy's own review of current commercial listings across several manufacturers, since neither has an active WorkoutHealthy SKU right now.

Rowing machines, resistance bands, and stair climbers move the knee differently than the seated equipment above. A rowing machine adds a hip-hinge and pulling motion on top of knee flexion, so how much it loads the knee depends heavily on technique and resistance type; if a rowing machine fits your rehab plan, ask your physical therapist about water rowing versus air rowing motion specifically, since the two load the knee differently. Resistance bands let you isolate movements around the knee with full control over range and load instead of a fixed pedal path, which is why physical therapists often start band work before progressing to machine-based cardio. A stair climber's standing, repeated knee-flexion motion is closer to real stair use than the recumbent stepper's seated pattern, so it typically fits later in a rehab progression, once a clinician has cleared standing, weight-bearing exercise.

What Actually Separates These Options

The biggest practical difference isn't intensity. Every machine in this guide is seated and low-impact by design. The difference that actually matters is how much your knee has to move, and whether you have to bear weight to use the machine at all.

A recumbent stepper drives the legs in a straight up-and-down line, avoiding the full circular rotation a bike pedal stroke requires. A recumbent bike uses that circular pedal path, just reclined instead of upright.

An elliptical splits the difference with a gliding stride and adds arm handles for upper-body work. All three still require you to bear some weight through the leg.

An arm-only ergometer removes the leg entirely, which is the right call for a true non-weight-bearing restriction. A treadmill sits at the other end: it's the only machine here that's fully weight-bearing and upright, so it asks more of a painful knee than any seated option, even with a cushioned deck.

Seat design matters more than most buyers expect. A swivel seat lets you rotate to the side for a transfer instead of stepping over a frame, which matters if getting on and off the machine is itself painful.

Some rehab-grade models also offer a removable seat for a direct wheelchair transfer. Confirm which seat type a specific model has before you order, since this varies by model even within WorkoutHealthy's own PT lineup.

Which Option Fits Your Situation

General knee pain or arthritis, still weight-bearing

Start with a recumbent stepper or recumbent bike. The seated, reclined position takes weight off the joint compared with standing exercise, and a swivel seat makes getting on and off easier than a step-over frame.

Recovering from knee surgery, cleared for gentle motion

A recumbent stepper or recumbent elliptical keeps the joint moving through a short, controlled range. This is general fitness information, not a substitute for your surgeon's or physical therapist's specific clearance on motion type and range.

Non-weight-bearing restriction, cannot put weight on the leg

If you can transfer to a seat, an arm-only ergometer keeps cardio training going with the legs completely uninvolved. If you cannot transfer out of a wheelchair at all, WorkoutHealthy's no-transfer active/passive trainer rolls up to most standard wheelchairs and can drive the arms, the legs, or both, including a fully motorized passive mode for patients who can't yet move a limb under their own power.

Want a home elliptical, rowing machine, or resistance bands specifically

WorkoutHealthy's elliptical is a single rehab-grade PT machine built for higher weight capacity and clinical use, not a lower-priced consumer elliptical, see the price comparison below if budget is a factor. A rowing machine and resistance bands are different equipment categories with their own knee-loading profile: rowing adds a hip-hinge and pulling motion, while bands let a physical therapist prescribe isolated movements around the knee without a fixed machine path.

Cleared for weight-bearing walking and want a walking-based workout

A cushioned treadmill is a reasonable choice once your clinician has specifically cleared walking. It is still more weight-bearing than any seated machine on this list, so it's not the equipment to default to just because it's familiar.

Price and Total Ownership

Across the equipment WorkoutHealthy carries in this category, price runs roughly $2,100 to $7,200 depending on category and model. The arm-only OmniTrainer and the independent-leg PhysioStep PRO sit at the top of that range; the eTrainer and PhysioCycle XT sit at the bottom.

The PhysioStep line, CyclePlus, PhysioCycle XT, eTrainer, and OmniTrainer all ship free and carry the same Health Care International warranty: lifetime on the frame, 3 years on mechanical and electrical parts, and 1 year on labor. WorkoutHealthy's treadmills come from different manufacturers, so confirm the specific freight and warranty terms for whichever treadmill model you're considering before you order.

Rehab-grade recumbent bikes, steppers, and ellipticals like the ones above are priced for physical therapy and active-aging use, generally in the $2,400–$5,900 range, and if you are buying for a clinic room instead of a spare bedroom, our guide to rehab and medical facility equipment essentials covers what else a treatment space usually needs. A general search for "elliptical for bad knees" often turns up consumer machines well under $1,000; those lighter-duty machines can be a reasonable choice if you don't need the higher weight capacity, swivel seat, or clinical-grade construction built into PT equipment. Match the price tier to your actual use case rather than assuming more expensive automatically means more appropriate for your knee.

Space, Delivery, and Installation

Swivel-seat models need clearance beyond their base footprint for the seat to rotate through its full arc, on top of the machine's own width and depth. Exact published footprint dimensions aren't available for every model in this lineup, so confirm the number for your specific model with WorkoutHealthy before you finalize a room layout.

Treadmills need standard treadmill clearance front and rear for safe use, plus enough overhead height for a taller user. Confirm exact dimensions, door and hallway access, and electrical requirements for the specific model before you order, since these vary by manufacturer even within our own lineup.

Frequently Asked Questions

How do I choose between a rowing machine, resistance bands, and a stair climber for knee pain?

It comes down to how much knee flexion and weight-bearing each motion requires. Resistance bands let you isolate specific movements with the least joint stress, which is why they're often used earliest in a rehab progression. A rowing machine adds a hip-hinge and pulling motion with more knee flexion, and how well it fits your plan often depends on water versus air rowing resistance. A stair climber is a standing, weight-bearing motion similar to real stairs, so it's typically introduced later, once a clinician has cleared standing exercise. Ask your physical therapist which of the three, if any, fits your current stage of recovery.

Is a rehab-grade recumbent machine really necessary, or is a cheaper home elliptical enough?

It depends on your budget and how much you actually need the swivel seat, higher weight capacity, and clinical-grade construction this lineup is built around. WorkoutHealthy's ellipticals and recumbent bikes are priced for physical therapy and active-aging use, not entry-level home fitness, and that's a real tradeoff worth knowing before you shop.

Should I see a doctor or physical therapist before starting on this equipment?

Yes, especially if you have a diagnosed knee condition, recent surgery, or ongoing pain. This guide covers general equipment information, not a diagnosis or a treatment plan, and a clinician can tell you which motion type and intensity are actually appropriate for your knee.

What's the difference between this guide and the Low-Impact Cardio Machines guide?

This article covers low-impact equipment categories in general terms. The Low-Impact Cardio Machines for Bad Knees and Hips guide goes deeper on the specific rehab-grade machines we sell, compared by exactly how much knee or hip motion each one requires.

Are treadmills okay for bad knees?

A cushioned treadmill can be appropriate once a clinician has cleared you for weight-bearing walking, but it's still the most weight-bearing option in this guide. If your goal is minimizing joint impact specifically, a recumbent stepper, recumbent bike, or elliptical asks less of the knee than any treadmill.

Can I use this equipment after knee replacement or other knee surgery?

Possibly, but that decision belongs to your surgeon or physical therapist, not to this article. Post-surgical clearance depends on your procedure, healing timeline, and individual restrictions, so confirm motion type and range with your care team before you buy or use any equipment on this list.

Making the Right Choice

If you can bear weight and your clinician has cleared general low-impact motion, start with a recumbent stepper or recumbent bike. Both are the lowest-friction way to add cardio without asking much of a painful knee.

If you cannot bear weight at all, an arm-only ergometer is the right category, not a modified version of a leg machine. If a rowing machine, resistance bands, or a true stair climber specifically fits your plan, choose based on how much knee flexion and weight-bearing your clinician has cleared, not just what's familiar from a gym.

Ready to compare the specific rehab-grade models? See Low-Impact Cardio Machines for Bad Knees and Hips or Recumbent Stepper vs Recumbent Bike: Which Should You Buy for Rehab? for a full side-by-side. You can also browse the Physical Therapy Recumbent Bikes collection and the Upper Body Ergometers & eTrainers collection directly, or ask WorkoutHealthy to confirm specs and space requirements for a specific model before you order.

References and Sources

• Centers for Disease Control and Prevention. "About Physical Activity and Arthritis." View source. Accessed August 2026.
• Centers for Disease Control and Prevention. "Benefits of Physical Activity." Physical Activity Basics. View source. Accessed August 2026.
• Mayo Clinic. "Exercise Helps Ease Arthritis Pain and Stiffness." Updated April 2026. View source. Accessed August 2026.
• American Academy of Orthopaedic Surgeons. "Managing Arthritis Pain With Exercise." OrthoInfo. View source. Accessed August 2026.
• ASTM International. F2276-10(2015), Standard Specification for Fitness Equipment. Accessed August 2026.
• U.S. Consumer Product Safety Commission. Exercise Equipment recalls and safety information. Accessed August 2026.