Pain guide · Knee pain
Knee osteoarthritis usually shows up from your mid-40s as pain with activity such as walking, stairs and getting out of a chair, and morning stiffness that wears off within half an hour.
Every major guideline puts exercise first, with weight loss if you carry extra. On average it improves pain and function by a modest amount, and the best programme is the one you will stick with.
Exercise is for pain that has been checked or is clearly mild and settling.
NICE says osteoarthritis can be diagnosed without imaging in people aged 45 or over who have activity-related joint pain and either no morning stiffness or stiffness lasting 30 minutes or less. Imaging is for when something does not fit.
Source 3
In 1,212 people aged 50 and over with knee osteoarthritis, those who walked for exercise were less likely to develop new frequent knee pain. Recreational runners had lower rates of hip and knee arthritis (3.5%) than non-runners (10.2%) or competitive runners (13.3%), though these are associations that other factors may explain.
In 9 trials, exercise that loads the knee did not seem to harm cartilage, though the evidence was low quality. Using the knee is not wearing it out.
NICE: try a gel or cream anti-inflammatory (a topical NSAID) first; paracetamol and weak opioids are not routinely offered, and glucosamine is not offered. Manual therapy only alongside exercise. No acupuncture, dry needling, TENS, ultrasound, laser or electrical muscle stimulation. Consider a walking aid. Arthroscopic washout or debridement is not offered.
OARSI also ranks topical NSAIDs highly, conditionally advises against paracetamol and strongly advises against opioids.
Braces and tape: the American College of Rheumatology strongly recommends a knee brace for selected people and conditionally recommends kinesiotape; NICE says do not offer them routinely unless the joint is unstable and exercise alone is not enough. Paracetamol: the ACR conditionally supports it; NICE and OARSI advise against routine use.
NICE: offer everyone therapeutic exercise tailored to them, such as local muscle strengthening and general aerobic fitness, and consider supervised sessions. NICE also tells people that joint pain may rise at first and that regular exercise still helps.
The ACR strongly recommends exercise, weight loss if overweight, self-management programmes, tai chi and a cane where needed, and conditionally recommends balance exercise and yoga. OARSI makes education and structured land-based exercise the core treatments.
The 2024 Cochrane review (139 trials, 12,468 people) found pain about 9 points better on a 0 to 100 scale than placebo or attention control (low certainty), and function about 11 points better (moderate certainty). Against usual care, pain was about 13 points better.
The authors judged these gains of uncertain clinical importance, because they did not clearly reach the change most people notice. They found no differences between types of exercise, and exercise may slightly increase side effects, mostly minor ones.
Source 6
An analysis of 48 trials found programmes aimed at the quadriceps, and supervised exercise at least 3 times a week, reduced pain more, and benefits were similar whatever the X-ray severity or starting pain. The 2024 Cochrane review found no link with the number of sessions, so this is not settled. Weak quadriceps are linked with developing knee arthritis, which is one reason the plan leans on them.
Denmark's GLA:D programme combines education with 12 supervised exercise sessions, twice a week for 6 weeks. In its national registry, knee pain fell by 13.8 points on a 0 to 100 scale and the gains held at 12 months, with fewer people taking painkillers. There was no comparison group, so the true effect is probably smaller.
Source 8
If you carry extra weight, NICE says any loss is likely to help and 10% is likely to help more than 5%. Losing more than 5% within about 20 weeks improved disability. In the 18-month IDEA trial of 454 adults, diet plus exercise (11.4% weight loss) gave less pain and better function than diet or exercise alone.
In 100 people eligible for a knee replacement, surgery plus 12 weeks of non-surgical care beat non-surgical care alone at 12 months, but brought more serious adverse events (24 against 6). Only 26% of the non-surgical group went on to have a replacement within the year.
So exercise comes first and many people avoid or delay surgery; a replacement helps people who still struggle.
Rate your knee pain from 0 to 10 during and after exercise. In the pain-monitoring model used in knee trials, 0 to 2 counts as safe, up to 5 as acceptable and above 5 as too much. Aim for 0 to 3 most of the time.
By the next morning your knee should be back to its usual level. If it is not, drop back one step next time (fewer sets, a shallower range, a lower step), not to nothing. Over the weeks pain should hold steady or ease; that last check is our suggestion rather than a tested rule.
Some knee programmes say you should feel no pain at all. The trials allowed some, and a meta-analysis found exercising into some pain did no worse than pain-free exercise. NICE says joint pain may rise when you start exercising with arthritis, and that regular exercise still helps in the long run.
Sharp, catching or giving-way pain, or new swelling, is a reason to stop and get it checked.
Start at the first stage. Each move opens a full guide with a 3D demo.
Weeks 1 to 2. Strength 2 or 3 days a week (the quad sets daily), with walking or cycling on most days. Doses are editorial starting points; the structure resembles GLA:D.
3D demoQuad set (static quads)Beginner · No equipment10 holds of 5 s, twice a day
Harder: Straight-leg raise
3D demoStraight-leg raiseBeginner · No equipment2 to 3 sets of 10 each leg
Easier: Quad set (static quads) · Harder: Leg extension
3D demoSeated knee extension (chair)Beginner · A bench or box + Something with weight3 sets of 10 to 12 each leg
Easier: Quad set (static quads) · Harder: Leg extension
3D demoSit to stand from a chairBeginner · A bench or box3 sets of 8 from a high seat · Use your arms if needed
Harder: Bodyweight squat
3D demoGlute bridgeBeginner · No equipment2 sets of 10
Easier: Pelvic tilt into bridge · Harder: Glute kickback (quadruped hip extension)
3D demoStationary cyclingBeginner · Cardio machine10 to 15 min easy · A recumbent bike works too
Harder: Air bike intervals
3D demoTreadmill walkingBeginner · Cardio machine10 min at a comfortable pace, most days · Or walk outdoors
Harder: Treadmill jogging
Move on when: Pain stays within the rule (up to 5 out of 10 is acceptable) and settles by the next morning.
Weeks 2 to 6, two or three days a week. Balance work is conditionally recommended by the ACR.
3D demoSit to stand from a chairBeginner · A bench or box3 sets of 10 to 12, lower seat, no hands
Harder: Bodyweight squat
3D demoWall sitBeginner · A wall3 to 4 holds of 20 to 40 s
Easier: Straight-leg raise · Harder: Box drop landing
3D demoSide-lying leg raiseBeginner · No equipment3 sets of 12 each side
Easier: Lateral band walk · Harder: Step-up with knee raise
3D demoGlute bridgeBeginner · No equipment3 sets of 12
Easier: Pelvic tilt into bridge · Harder: Glute kickback (quadruped hip extension)
3D demoSlow calf raiseBeginner · A wall3 sets of 12
Easier: Seated bent-knee calf raise (soleus raise) · Harder: Standing dumbbell calf raise
3D demoTreadmill walkingBeginner · Cardio machineBuild to 20 to 30 min · Or walk outdoors
Harder: Treadmill jogging
Move on when: You can do 12 sit-to-stands without using your hands and 10 step-ups each leg.
From week 6. Keep two strength days a week going after the first 6 weeks, as GLA:D does.
3D demoDumbbell goblet squatIntermediate · A dumbbell3 sets of 8 to 12 · Or the leg press at a gym
Easier: Bodyweight squat · Harder: Back squat with bands
3D demoSplit squatIntermediate · No equipment3 sets of 8 each leg, holding a support
Easier: Bodyweight squat · Harder: Reverse lunge
3D demoPatrick step-downIntermediate · A step3 sets of 8 each leg, low step
Easier: Bodyweight squat · Harder: Skater squat
3D demoLateral band walkBeginner · A band3 sets of 12 steps each way
Easier: Hip abduction machine · Harder: Side-lying leg raise
3D demoSingle-leg standBeginner · A wall3 holds of 30 s each leg
Easier: Tandem stance and heel-to-toe walk · Harder: Single Leg Reach Matrix
3D demoSingle-leg calf raise from a stepIntermediate · A step + A wall3 sets of 8 to 10 each leg
Easier: Slow calf raise · Harder: Single-leg pogo hops
3D demoElliptical TrainerIntermediate · Cardio machine20 to 30 min · Building toward 150 min a week of walking, cycling or this: a practical target, not a trial dose
Easier: Stationary cycling · Harder: Depth jump to a second box
Move on when: Add a little load or a harder option every week or two while the knee stays within the pain rule.
No exercise has been shown to damage the joint. Deep loaded squats, high-impact jumping or long downhill walks may flare some knees, so adjust the depth and volume rather than banning them.
Source 13
Quad sets, straight-leg raises and heel slides can all be done lying down, and the seated knee extension and sit-to-stand need only a chair. They are a good start on a bad day, not the whole plan.
The ACR strongly recommends tai chi, and OARSI supports water-based exercise for knee arthritis. Both are good alternatives if land exercise hurts too much at first; cycling is another. We have no demos for them yet.
A gentle leg strength routine with no jumping: sit-to-stands, step-ups, wall sits, bridges and calf raises.
20 minBeginner7 movesA bench or box, A stepBalance practice in 10 minutes: tandem stance, single-leg stands, marches, heel walks, tree pose and floor transfers.
10 minBeginner7 movesA wall, A bench or boxYes. Walkers with knee osteoarthritis were less likely to develop new frequent knee pain, and walking is the most-studied aerobic exercise in arthritis trials. Start with short walks at a comfortable pace and build the time gradually.
None has been shown to damage the joint. Choose by the pain rule: deep loaded squats, jumping or long downhill walks may flare some knees, so make them shallower or shorter rather than dropping them for good.
Quad sets, straight-leg raises and heel slides can be done lying down. They are a start, not the whole plan: standing strength work brings the bigger gains.
Chair stands, seated knee extensions, step-ups, bridges and balance work, built up gradually. The same plan works at any age; start at stage 1 and use the easier option shown under each move.
There is no evidence that it rebuilds cartilage. On average it improves pain and function, and loading exercise did not appear to harm cartilage in trials.
Recreational runners had lower rates of hip and knee arthritis than non-runners in a meta-analysis. These are associations, but they do not support the idea that running wears knees out.
Exercise comes first. In a trial of people eligible for a replacement, surgery plus exercise did better than exercise alone but brought more serious adverse events, and only about a quarter of the exercise group had surgery within the year. Talk it through with your doctor if exercise and weight loss have not helped enough.
Usually weeks. GLA:D runs for 6 weeks, and its registry found the gains held or grew at 12 months. Keep going after the first 6 weeks.
Exercise education, not a diagnosis or treatment plan. It is written from the guidelines and studies listed above; review by a clinician is pending. If your pain follows an injury, is severe, is getting worse, or comes with any warning sign listed on this page, get it assessed. Health disclaimer.
