Is the Elliptical Machine Good for Bad Knees? | What The Research Says

The answer to whether it’s good for bad knees isn’t a simple yes or no — it depends on your specific knee condition, how you use the machine, and what your body tolerates. Here’s what the evidence actually shows.

Why Ellipticals Are Usually Recommended for Knee Pain

The Johns Hopkins Arthritis Center considers elliptical training generally good for knee arthritis because your feet stay on the pedals throughout the motion, which means there’s no impact force hitting your knee joint. The low-impact nature, combined with the smooth, gliding motion, makes the elliptical a comfortable starting point for many people with arthritis or previous knee injuries.

The Arthritis Foundation also supports elliptical use, noting the machines provide strengthening and cardiovascular benefits while exerting less force on the joints than running or other impact activities. For those who find walking painful or running impossible, the elliptical offers a way to maintain fitness without the pounding.

That’s why physical therapists frequently suggest elliptical training when patients ask what cardio they can do with bad knees.

Does The Elliptical Actually Load Bad Knees?

Low impact doesn’t mean no load. Resistance settings on the elliptical generate muscle force across the knee joint, and this force can still aggravate sensitive joints, especially at higher resistance levels.

This is why some people with knee osteoarthritis finish an elliptical session feeling worse instead of better. The constant, repetitive motion and resistance load can strain an already-inflamed knee joint, particularly if you have a history of injury or your arthritis affects the knee’s ability to handle bending and loading forces.

When The Elliptical Causes Knee Pain: Common Triggers

Several fixable factors can turn an otherwise comfortable elliptical workout into a knee-pain trigger. Address these before you give up on the machine:

• Resistance set too high. Cranking the resistance creates more work for your knee muscles, and the increased torque can overwhelm an arthritic joint. Start at the lowest resistance and raise it slowly over several sessions.
• Poor posture. Leaning heavily on the handles or hunching over shifts your body weight and changes your knee angle mid-stride, putting uneven stress on the joint.
• Improper foot placement. Keeping your heels lifted or letting your feet slide forward or back on the pedals alters the joint angle. Keep your feet flat and centered on the pedals.
• Overuse. Jumping into 45-minute sessions when your knees haven’t adapted can cause overuse irritation. Start with shorter, gentler sessions.
• Existing knee instability. If your knee gives out or feels unstable, the repetitive elliptical motion can aggravate the joint. In this case, the machine may not be suitable without consulting a clinician.

How To Use An Elliptical With Bad Knees Safely

Pay attention to how your knee feels during the workout and, just as importantly, the next day.

The Arthritis Foundation’s general guidance for joint-friendly exercise applies here: warm up gradually, keep movements smooth without locking or jerking your knees, and let pain guide your intensity.

If you’re shopping for a machine, our tested roundup of the best ellipticals for bad knees walks through specific models and what to look for.