Knee Osteoarthritis Self-Assessment
Review knee pain, stiffness, walking, stairs, swelling, locking and activity limitation to estimate your current knee symptom burden.
This measures symptom burden — not your probability of having arthritis
Many knee conditions can cause pain, stiffness and swelling. The score below does not diagnose osteoarthritis.
Clinical context
These answers help interpret your symptom pattern but do not directly increase the symptom-burden score.
Pain & stiffness severity
Rate your typical recent symptoms rather than the single worst episode you have ever experienced.
Typical knee pain
0 = no pain. 10 = extremely severe pain.
Overall stiffness severity
How troublesome does the knee stiffness feel?
Night pain
How much does knee pain affect rest or sleep?
Everyday knee function
Rate how difficult each activity is specifically because of your knee.
Walking difficulty
0 = no difficulty. 10 = extremely difficult or unable.
Stair difficulty
Include climbing up or going down stairs.
Difficulty standing from a chair
Rate difficulty caused by the knee during sit-to-stand.
Overall activity limitation
How much does the knee limit work, exercise or everyday activities?
Swelling & mechanical symptoms
These symptoms provide useful context but are not specific to osteoarthritis.
Current knee swelling
Safety check
These features can indicate problems that should not be interpreted through an osteoarthritis score.
Knee Symptom Burden Score
44/100
Moderate symptom burden
Your knee symptoms appear to be having a meaningful effect on comfort or everyday function.
This is a custom DoctorToolsMD educational score. It does not calculate your probability of having osteoarthritis.
Clinical pattern context
Some features overlap with a typical clinical OA pattern
Age 45 or over, activity-related joint pain and no or short-duration morning stiffness overlap with the clinical pattern NICE describes for osteoarthritis. This still does not diagnose osteoarthritis.
What to do next
Consider clinical assessment if symptoms persist
Persistent pain, stiffness or functional difficulty can benefit from assessment to clarify the cause and discuss appropriate management.
Pain
44/100
Typical pain and night pain
Stiffness
40/100
Reported stiffness severity
Function
48/100
Walking, stairs and daily activity
Swelling
30/100
Current swelling burden
What influenced your result
You reported pain related to activity. This can occur in knee osteoarthritis, but it is not specific to osteoarthritis.
Stairs are one of your more difficult activities. Stair-related knee pain can occur with osteoarthritis but also with several other knee disorders.
Why age does not increase your score
Osteoarthritis becomes more common with age, but this calculator is designed to measure how much your symptoms affect you rather than estimate disease probability.
Age, activity-related pain and morning stiffness are displayed separately as clinical pattern context.
Knee osteoarthritis explained
What are the symptoms of knee osteoarthritis?
Knee osteoarthritis commonly causes joint pain and stiffness and can make walking, stairs and other everyday activities more difficult.
Some people also experience swelling, tenderness, reduced range of motion, weakness, giving-way sensations or grinding and crackling sensations.
Symptoms can vary greatly between people and can fluctuate over time.
What is a typical clinical osteoarthritis pattern?
NICE recommends that osteoarthritis can be diagnosed clinically without routine imaging when a person is aged 45 or over, has activity-related joint pain and has either no morning stiffness or morning stiffness lasting no longer than 30 minutes.
These features are useful clinical context, but entering all three into this tool does not mean that osteoarthritis has been diagnosed.
Knee pain when climbing stairs
People with knee osteoarthritis may experience increased pain when walking up or down stairs. Stair-related pain is not specific to osteoarthritis, however, and may also occur with patellofemoral pain and other knee disorders.
Morning knee stiffness: why duration matters
Short-duration morning stiffness can fit a typical osteoarthritis pattern. Prolonged morning stiffness is less typical and can be one reason a clinician considers alternative or additional diagnoses.
Does knee swelling mean osteoarthritis?
Osteoarthritis can cause knee swelling, but a swollen knee has many possible explanations.
Injury, gout, inflammatory arthritis and infection can also cause swelling. A rapidly swollen or hot red knee should not simply be assumed to represent osteoarthritis.
Knee clicking, catching and locking
Clicking and creaking are common and do not identify one specific diagnosis. True locking is different: the knee becomes mechanically stuck and cannot fully bend or straighten. Persistent true locking deserves clinical assessment.
Do you need an X-ray for knee osteoarthritis?
Not every person with typical osteoarthritis symptoms automatically needs an X-ray.
NICE recommends clinical diagnosis without routine imaging for a typical presentation. Imaging may be considered when atypical features suggest an alternative or additional diagnosis.
Exercise is a core treatment for osteoarthritis
NICE recommends therapeutic exercise tailored to the individual for people with osteoarthritis, including local muscle strengthening and general aerobic fitness.
Exercise can initially cause some discomfort, but consistent therapeutic exercise can improve pain, physical function and quality of life over time.
When is knee replacement considered?
Knee replacement is not determined by an online symptom score. NICE recommends considering referral when symptoms such as pain, stiffness, reduced function or progressive deformity substantially affect quality of life and non-surgical treatment has been ineffective or unsuitable.
What does the Knee Symptom Burden Score mean?
The DoctorToolsMD score summarizes four areas: pain, stiffness, everyday function and swelling. Higher scores indicate that the symptoms you entered have a greater effect on your daily life.
A score of 70 does not mean that you have a 70% chance of osteoarthritis or that your knee is 70% damaged.
DoctorToolsMD methodology
Transparent scoring without pretending to diagnose arthritis
The symptom-burden score uses pain for 35%, stiffness for 15%, everyday function for 40% and swelling for 10% of the base score.
Mechanical symptoms can add a small amount to the burden score, while safety features override routine interpretation.
Age and the typical NICE clinical pattern are deliberately kept separate from the score so the tool does not present a fabricated probability of having osteoarthritis.
This is not WOMAC, KOOS or another validated clinical instrument.
Learn about our medical review approach →Frequently asked questions
Knee Osteoarthritis Self-Assessment FAQ
Can this knee osteoarthritis self-assessment diagnose arthritis?+
No. This tool summarizes knee symptoms and provides educational context. It cannot diagnose osteoarthritis or determine the cause of knee pain.
What are common symptoms of knee osteoarthritis?+
Common symptoms include activity-related knee pain, stiffness, reduced movement, difficulty with walking or stairs, tenderness, swelling and sometimes grinding or crackling sensations.
Does knee pain when climbing stairs mean osteoarthritis?+
No. Stair-related pain is common in knee osteoarthritis but can also occur with patellofemoral pain, tendon disorders, meniscal problems and other knee conditions.
How long does morning stiffness last with osteoarthritis?+
NICE describes a typical clinical osteoarthritis pattern as activity-related joint pain with either no morning stiffness or morning stiffness lasting no longer than 30 minutes in adults aged 45 or over.
Do I need an X-ray to diagnose knee osteoarthritis?+
Not always. NICE recommends that typical osteoarthritis can often be diagnosed clinically without routine imaging. Imaging may be appropriate when symptoms are atypical or another diagnosis is being considered.
Does knee swelling mean osteoarthritis?+
Not necessarily. Osteoarthritis can cause swelling, but injury, gout, infection, inflammatory arthritis and other disorders can also cause a swollen knee.
What does true knee locking mean?+
True locking means the knee becomes mechanically stuck so that it cannot fully bend or straighten. Persistent or recurrent true locking should be clinically assessed.
When should knee pain be assessed by a doctor?+
Assessment is reasonable when symptoms persist, substantially limit activity, repeatedly swell, rapidly worsen, cause true locking or instability, follow significant trauma, or are associated with other concerning features.
What treatments are commonly used for knee osteoarthritis?+
Management commonly includes education and therapeutic exercise. Weight management can be helpful when appropriate. Medicines and other treatments may be considered according to symptoms and individual circumstances.
Does knee osteoarthritis always require surgery?+
No. Surgery is generally considered when pain, stiffness or loss of function substantially affects quality of life and appropriate non-surgical treatment has been ineffective or unsuitable.
Is this the WOMAC or KOOS knee score?+
No. This is not WOMAC, KOOS or another validated clinical questionnaire. The DoctorToolsMD Knee Symptom Burden Score is a transparent educational model.
Evidence & further reading
Medical disclaimer
This Knee Osteoarthritis Self-Assessment provides general educational information only. It cannot diagnose osteoarthritis, meniscal injury, inflammatory arthritis, gout, infection or another knee disorder.
Urgent or concerning symptoms should be assessed appropriately rather than interpreted through the numerical score.
Read full Medical Disclaimer →