Knees
Knee stretches, which are mostly not stretches of the knee
The knee is a hinge between two long levers. Almost everything that frees it up is done above it or below it.
Clinically reviewed by Lee Albert, NMT · 8 August 2026
There is very little to stretch at the knee itself
The knee is a hinge. It bends and straightens, with a small amount of rotation available only when it is already bent. It has no large muscle sitting across it that you can lengthen the way you can lengthen a hamstring, because the muscles that move it start somewhere else entirely: the quadriceps come down from the thigh and pelvis, the hamstrings come down from the sit bone, and the calf comes up from behind the ankle and crosses the back of the knee on its way.
So a knee that feels tight is usually reporting on its neighbours. The useful work is above it and below it, which is why this sequence spends most of its time at the hip, the thigh and the calf, and only a little at the joint itself.
The two muscles that cross the knee, and the one people miss
Of the four quadriceps, only the rectus femoris crosses both the hip and the knee. That is why a standing quad stretch with the hip already pushed forward reaches it and a seated one does not. Of the calf muscles, the gastrocnemius crosses the back of the knee, which is why a calf stretch with the knee straight is a different stretch from one with the knee bent, and why both appear below.
The one people miss is the calf. A stiff ankle changes how the knee is loaded on every step, and it is silent about it. If only one thing on this page gets done regularly, the heel drops are a better bet than they look.
Stiffness in the morning is worth timing
How long a knee stays stiff after rest is one of the few things you can observe at home that clinicians actually use. Stiffness that eases within about half an hour of getting going fits the common wear-related picture. Stiffness that runs well past that, or comes with heat and swelling, is a different sort of problem and is worth a conversation rather than a stretch.
Nothing on this page is aimed at the second kind. It is not a reason to avoid movement, but it is a reason to have it looked at rather than worked around.
If it hurts to bend, load it rather than force it
The instinct with a knee that will not bend is to push further into the bend. That is usually the wrong lever. Range at a knee tends to come back when the joint is confident, and confidence comes from the quadriceps being able to control the last part of straightening, not from being pushed into flexion.
That is why a strengthening movement, terminal knee extension, sits in the middle of a page called knee stretches. It is not padding. For a lot of people it does more than anything else here.
The sequence
- 1
Lower body warm up, standing · 3 to 4 minutes
A knee accepts range far better once it has moved through a little of it unloaded. Skipping this is the most common reason the rest feels worse than it should.
- 2
One knee to the chest · 45 to 60 seconds each side
Knee flexion with the leg carrying no weight, and the gentlest way to find out what bend is actually available today. Hands behind the thigh rather than over the kneecap.
- 3
Child's pose, knees wide · 60 to 90 seconds
Deeper knee flexion with the body's weight helping rather than forcing. Wide knees keep it out of the front of the joint. A folded blanket behind the knees makes it available to almost anyone.
- 4
Low lunge, padding under the back knee · 30 to 60 seconds each side
The rectus femoris, the one quadriceps that crosses the knee as well as the hip. It is reached here because the hip is extended, which a seated stretch never achieves.
- 5
Terminal knee extension · 10 to 12 each side, slowly
The quadriceps controlling the last few degrees of straightening. This is the strengthening movement on a stretching page, and for many people it changes more than the stretches do.
- 6
Downward dog, knees bent · 45 to 60 seconds
The calf and the back of the leg with the knees soft, which takes the hamstring out of it and leaves the deeper calf muscle working. Start here rather than in the straight-leg version.
- 7
Heel drops on a step · 10 to 12 each side
The calf and Achilles through their range. A stiff ankle quietly changes how the knee is loaded with every step, and this is the most direct thing to do about it.
- 8
Seated forward fold, knees bent · 60 to 90 seconds
The hamstring, with the knees bent enough that the stretch stays in the muscle rather than pulling at the back of the knee. Bend more than feels necessary.
- 9
Figure 4, on the back · 60 to 90 seconds each side
The hip above the knee. A hip that does not rotate well sends the difference down to the knee, and this is the easiest position in which to give it back.
Nothing here should be sharp, and nothing should be felt inside the kneecap. If the knee is having a bad week, the first three movements on their own are a complete and useful session.
What the research says
There is no guideline that prescribes knee stretches specifically, so what follows is the sourced ground underneath the sequence rather than a claim about it.
Where the knee joint itself is arthritic, NICE recommends therapeutic exercise tailored to the person for everyone with osteoarthritis, naming local muscle strengthening and general aerobic fitness as its examples, and asks clinicians to say plainly that joint pain may increase when exercise starts while regular consistent exercise remains beneficial for the joints. That is the reason this page puts a strengthening movement in the middle of it and links the strengthening page rather than treating stretching as the whole answer. A Cochrane review of exercise for knee osteoarthritis found reductions in pain and improvements in physical function of a similar order to those reported for non-steroidal anti-inflammatory drugs, with the benefit sustained for some months after supervised programmes ended.
On the stretching itself, a 2025 systematic review with meta-analysis pooling sixty-five studies found neither a single session nor a course of static stretching significantly changed muscle fascicle length, while range of motion improved through reduced stiffness and greater tolerance to passive tension. The American College of Sports Medicine's position stand puts the useful dose at around sixty seconds per exercise across two or more days a week, which is where the timings below come from.
On the morning stiffness note, NICE describes osteoarthritis as a clinical diagnosis in people 45 or over with activity-related joint pain and either no morning stiffness or stiffness lasting no longer than thirty minutes, listing prolonged morning stiffness as an atypical feature worth investigating.
Sources
- 1NICE NG226, osteoarthritis in over 16s (2022), recommendations 1.3.1 and 1.3.3
Offer therapeutic exercise tailored to the person for all people with osteoarthritis, and advise that joint pain may increase when starting it while regular consistent exercise remains beneficial for the joints.
- 2Fransen et al., exercise for osteoarthritis of the knee, Cochrane systematic review (British Journal of Sports Medicine, 2015)
Land-based therapeutic exercise reduced knee pain by 12 points per 100 and improved physical function by 10 points per 100 immediately after treatment, with benefit sustained for at least 2 to 6 months after formal treatment ended.
- 3Mechanisms underlying range of motion improvements following acute and chronic static stretching, systematic review with meta-analysis (Sports Medicine, 2025)
Neither acute nor chronic static stretching significantly changed fascicle length; range of motion gains were associated with reduced overall stiffness and increased tolerance to passive tension.
- 4American College of Sports Medicine position stand, quantity and quality of exercise for apparently healthy adults (Garber et al., Medicine and Science in Sports and Exercise, 2011)
Adults should do a series of flexibility exercises for each of the major muscle and tendon groups, totalling 60 seconds per exercise, on two or more days a week.
- 5NICE NG226, osteoarthritis in over 16s (2022), recommendation 1.1.1
Osteoarthritis is diagnosed clinically in people 45 or over with activity-related joint pain and either no morning joint-related stiffness or morning stiffness lasting no longer than 30 minutes; prolonged morning stiffness is listed as an atypical feature.
Common questions
Can you stretch the knee itself?
Not really, and that is the useful thing to know. The knee is a hinge with no large muscle sitting across it to lengthen. The muscles that move it start at the pelvis, the thigh and the ankle, so what people experience as a tight knee is nearly always the quadriceps, the hamstrings, the calf or the hip reporting in. That is where this sequence spends its time.
Why is a strengthening exercise on a page about stretches?
Because range at a knee tends to return when the joint is confident rather than when it is pushed. Terminal knee extension trains the quadriceps to control the last part of straightening, and NICE recommends therapeutic exercise including local muscle strengthening for everyone with osteoarthritis. For a lot of people it does more than the stretches around it.
Should the knee be bent or straight for a calf stretch?
Both, and they are not the same stretch. The gastrocnemius crosses the back of the knee, so it is reached with the knee straight. Bending the knee takes it out and leaves the deeper soleus working. This sequence does the bent-knee version first because it is kinder on the back of the joint.
Is it normal for my knee to be stiff in the morning?
Stiffness that eases within about half an hour of moving fits the common wear-related picture. NICE treats stiffness lasting longer than thirty minutes as an atypical feature worth investigating, and heat or swelling alongside it is worth mentioning too. Neither is a reason to stop moving, but the second is a reason to get it looked at rather than stretched.
Does exercise actually help knee arthritis, or just distract from it?
A Cochrane review of exercise for knee osteoarthritis found reductions in pain and improvements in physical function of a similar order to those reported for anti-inflammatory drugs, with benefit persisting for some months after supervised programmes ended. NICE also asks clinicians to be upfront that joint pain can increase when exercise starts, while regular consistent exercise remains beneficial.
A knee that locks, gives way, swells quickly, or will not take your weight is not a stiffness problem and needs looking at rather than stretching. The same goes for pain that arrived after a specific twist or fall. Stop and speak to a clinician if a movement brings on sharp pain, dizziness, or symptoms that travel down an arm or a leg, and seek urgent care for any loss of bladder or bowel control or numbness around the saddle area.
Also called knee stretches, stretches for knee pain, knee stretches for stiffness, knee flexibility exercises, gentle knee stretches, knee stretches for seniors. Movements are drawn from the clinically authored Vinys library. This page is general movement information, not medical advice, and it is not a diagnosis. How the method works.