Pain after walking is met often in those who have a degenerative knee joint, but pain from one instance of walking does not always mean that new damage has arisen in the joint. The symptoms may reflect the accumulated load that has gone onto a joint that is sensitive, fatigue of the muscles, a recent change in the level of activity, or several factors together.

Stopping all movement is usually not the answer in the long term. A more suitable approach is to search for the pattern of the symptoms, adjust the amount of activity at present, and then gradually build strength and endurance in walking, while checking for features that should receive a medical assessment.

Why may the knee joint hurt after walking

A degenerative knee joint affects the whole joint, not only the cartilage. Changes may arise in the bone beneath the cartilage, the lining of the joint, the meniscus, the ligaments, the tissue around the joint, and the muscles that control the leg. The severity of the pain does not always correspond with the degree of change in the X-ray image.

Walking makes the knee joint bear force repeatedly. Symptoms may arise when the distance, the speed, slopes, stairs, or uneven ground exceed the capacity at that moment. Swelling of the joint, insufficient recovery, increasing activity quickly, weakness of the muscles at the front of the thigh or of the hip, and a changed pattern of walking can all play a part.

A crunching sound or a clicking sound may be found in a degenerative knee joint. The sound alone does not tell the severity of the state, but it becomes more important when it arises together with pain, swelling, reduced movement, an unstable joint, or declining ability to function.

When should an assessment be received

Receiving an assessment should be considered when the pain arises repeatedly, not only once, when the distance that can be walked decreases, or when the symptoms begin to change daily life. The features that should be attended to are

Walking with a limp or with shorter steps in order to protect the knee
Avoiding stairs, shopping, travelling, exercising, or social activities
Having to use the arms to push yourself up when getting up from a chair
Swelling or tightness taking longer to ease
Feeling that the knee is unstable or gives way
Pain disturbing sleep
Having to rely on painkillers more in order to still be able to do activities
Not being sure how much you should walk or exercise

You should not wait until the X-ray image looks "severe" before beginning an assessment. Planning the care is considered from the symptoms, the function, the goals, and the test results. In general, symptoms that correspond with degeneration do not require imaging in everyone, but examination may be needed when the symptoms are different from the usual pattern, get worse quickly, arise after an accident, or raise suspicion of another disease.

What should the assessment cover

A good assessment should look wider than the point that is most painful, and may cover the following topics as suitable

The onset, the position, the timing, and the pattern of the pain and the swelling
Stiffness in the morning and recovery after activity
The movement, the strength, and the stability of the knee joint
The working of the hip and the ankle
Balance, the pattern of walking, and the distribution of weight
Getting up and sitting down, using stairs, occupational tasks, and leisure activities
The current level of activity and recent changes in training or workload
Relevant medicines, health states, injuries, and previous treatment
Neurological or circulatory examination where there is an indication

Muscle strength testing, gait analysis, force measurement, ultrasound, or other imaging may help answer certain clinical questions. These instruments should supplement, not replace, the history, the physical examination, and the outcomes that matter to the patient.

The first line of care

The NICE guideline on osteoarthritis (opens in a new tab) makes therapeutic exercise adjusted to each person and the giving of information the core of the care. Support in managing weight may help reduce pain and increase function for those who are overweight or obese, but it should be discussed respectfully and in a way that corresponds with the health and the goals of each person.

A plan without surgery may combine knowledge, exercise, the pacing of activity, physiotherapy, and suitable relief of pain. The period of beginning exercise may be temporarily uncomfortable, which does not automatically mean that the joint is being damaged. But the programme should be adjusted if it causes severe pain, clear swelling of the joint, reduced function, or repeated prolonged flare-ups.

How to adjust walking without stopping altogether

There is no single distance or pain score that is safe for everyone. Begin from a distance and a speed that are usually tolerable, then observe the symptoms while walking, later in the same day, and during recovery. If the response of the symptoms is severe or lasts much longer than usual, reduce one component of the load, such as the distance, the speed, the slope, or the frequency, before increasing it again.

Choices that may help are dividing it into several short walks, choosing level ground, planning rest periods, using suitable footwear, and alternating walking with cycling, exercise in water, or other tolerable activities. The goal is not lifelong avoidance, but going back to meaningful activities in an ordered way.

Strength, balance, and aerobic exercise

The muscles at the front of the thigh and of the hip help control the knee and the pelvis while walking, using stairs, and getting up from a chair. The capacity of the calf, balance, and coordination also have an effect on how the leg bears force. Weakness may follow pain and not moving much, but it can be developed.

The AAOS guideline on a degenerative knee joint (opens in a new tab) recommends supervised exercise, exercise done by yourself, or exercise in water, rather than no exercise, in order to help with the pain and the function. The best form is the form that is clinically suitable, can be increased in level, and that the patient is likely to continue with.

The training may begin from movement with the help of equipment, training in getting up and sitting down, low-level strengthening, balance, and short periods of aerobic activity, and then gradually increase the resistance, the range of movement, the speed, and the complexity of the task according to the symptoms, the swelling, the medical factors, and the goals. There is no single posture or exercise machine that is necessary for everyone.

Where does exercise in water come in

Exercise in water for a degenerative knee joint may be of benefit when walking or strengthening on land is difficult because of pain, weakness, difficulty with balance, or pain in several joints. Buoyancy helps reduce the weight going down onto the legs and may make moving more comfortable.

Exercise in water is not superior to training on land for everyone and does not have to be the whole programme. Since most daily routines happen on land, the plan usually includes, or gradually develops towards, suitable training of strength, balance, and walking on land.

Medicines, supportive devices, and walking aids

Painkillers may support activity in some cases, but the benefits and the risks differ according to the kind of medicine and the health history. An anti-inflammatory medicine of the applied kind may be considered for a degenerative knee joint, while an oral anti-inflammatory medicine requires consideration of the risks to the stomach, the kidneys, the liver, the heart and blood vessels, as well as interactions between medicines. A doctor or a pharmacist can give advice on suitability. Medicine should not be used merely in order to force through activity that is too heavy.

A walking aid or a knee brace may help with stability, confidence, or managing the load in some patients. It should be the right size and used for a clear goal. Insoles, supports, tape, and other devices do not help everyone and should not replace care that emphasises exercise.

What should be known about injections into the knee joint

Not everyone who has a degenerative knee joint needs a joint injection. Corticosteroid medicine injected into the joint may help relieve the symptoms in the short term in some patients when other choices are not suitable or have not worked, but it does not create new cartilage, and the period in which activity is more comfortable still requires careful increase of the load.

The main guidelines do not recommend hyaluronan injection as a routine. The evidence and the recommendations concerning plasma with a high concentration of platelets, prolotherapy, and other products advertised as "restoring tissue" are still uncertain or inconsistent. These choices cannot be used interchangeably and should not be described as proven creation of cartilage.

Before an injection, the goals, the evidence for the product to be used, the length of time expected, the alternatives, the costs, and the risks, such as a flare-up of pain, bleeding, infection, an allergic reaction, and the particular effects of that medicine, should be discussed. The result should be assessed from the ability to function alongside the pain.

When should knee replacement be discussed

Care without surgery is still of benefit in many stages of degeneration, but it cannot always relieve the symptoms sufficiently. It may be suitable to refer to a surgeon when pain, stiffness, reduced function, or deformity of the joint greatly affects the quality of life, and suitable care without surgery has not worked or is not suitable for the patient.

The decision should rely on clinical assessment and shared decision-making, not on the grade in an image alone. Rehabilitation may help prepare the body before surgery and help recovery after surgery, but it should not be used as a condition that unnecessarily delays the referral.

Symptoms that must receive an assessment quickly

A knee joint that has just become hot, red, or very swollen, particularly when there is fever or feeling unwell, must receive an urgent medical assessment in order to rule out infection or another acute inflammatory state. An urgent assessment should also be received after a severe accident, if the knee is deformed, locked, or unable to bear weight.

Emergency help should be sought when there is sudden breathlessness or chest pain, particularly if the calf has just become swollen or painful. Symptoms that deteriorate quickly, unexplained symptoms throughout the body, or newly arisen weakness or numbness, should also receive an assessment rather than being concluded to arise from degeneration.

Build capacity, not fear of movement

Pain after walking is information that must be interpreted, not evidence that walking must be stopped. A useful plan adjusts the activity to suit the current capacity, builds up the strength of the legs, cares for the relevant health and weight factors, and follows whether meaningful function improves.

There should be a reassessment when progress stalls or the pattern of the symptoms changes. The goal is to increase walking and daily living sustainably, with procedures considered only when there is a clear indication and the benefits, the limitations, and the risks are explained straightforwardly