KneeŞişli, Istanbul
Knee osteoarthritis treatment
Knee osteoarthritis is the gradual thinning of joint cartilage and the joint's adaptation to it. Exercise has the strongest evidence for reducing pain in this condition — it is more effective than medication and has no side effects.
Also known as: Knee arthritis, gonarthrosis, degenerative joint disease
What is it?
Joint cartilage covers the bone ends and makes movement smooth. It thins over the years, accompanied by new bone formation at the joint margins (osteophytes) and changes in the joint fluid. The phrases 'joint space narrowing' and 'degenerative change' on an X-ray describe this process.
The most important clinical fact is that the degree of change on X-ray correlates weakly with the severity of pain. Some people with advanced changes have no symptoms at all, while others with mild changes have marked pain. What makes the difference is largely surrounding muscle strength and overall activity level.
The role of exercise here is supported by strong evidence. Quadriceps strengthening is the single most effective intervention for reducing pain and improving function. Contrary to a common fear, exercise does not wear the cartilage further; it improves joint nutrition and slows the process. Inactivity accelerates it through muscle loss.
Symptoms
- Knee pain that increases with walking and going up and down stairs
- Morning stiffness, usually lasting under 30 minutes
- Difficulty standing up after prolonged sitting
- Grinding, crunching and a sense of fullness in the knee
- Swelling after activity
- A gradual reduction in walking distance
- Change in the shape of the knee in advanced cases
Causes and risk factors
- Age-related thinning of cartilage
- Excess weight, which multiplies the load on the knee
- Previous meniscal or ligament injury
- Weakness in the quadriceps
- Genetic predisposition
- Heavy physical work and repetitive kneeling
The assessment
Walking distance, stair capacity and sit-to-stand time are measured; these three functional tests set the starting level and provide the most meaningful indicator of improvement. Knee range and swelling status are recorded.
Quadriceps and hip strength are measured separately on each side. What the findings in the X-ray report mean, and why their relationship to pain is weak, is explained clearly — an explanation that directly changes how patients approach exercise. Inflammatory joint disease is ruled out.
Course of treatment
Weeks 0–3
Managing pain and swelling
Range of motion is worked and any swelling controlled. Activity level is adjusted to keep pain within acceptable limits — complete rest is not advised.
Weeks 3–10
Strengthening
Quadriceps and hip strengthening is the centre of the programme. As strength increases, load on the joint falls and pain reduces. Using resistance is safe and necessary in this condition.
Weeks 10–16
Endurance and function
Walking distance is progressively increased and stair and sit-to-stand capacity developed. Where weight management is needed it is integrated into the programme at this stage.
Maintenance
Lifelong exercise
Gains are only maintained with regular exercise; strength regresses within a few months if it stops. A short programme two or three times a week is the most effective long-term treatment here.
How long does it take?
A clear reduction in pain and improvement in function are usually seen within eight to twelve weeks, with a programme of 12–20 sessions. The goal is not to restore cartilage — that is not possible — but to reduce pain, increase walking distance and delay the need for surgery. A significant proportion of patients who reach these goals stay well for years without joint replacement.
When to see a doctor
The findings below fall outside the scope of physiotherapy and require medical assessment.
- Fever, redness and marked warmth — possible joint infection
- Pain not relieved by rest at night that wakes you from sleep
- Rapidly developing large swelling
- The knee locking completely
- Joint pain with unexplained weight loss
- Pain in several joints together with morning stiffness lasting over an hour
Frequently asked questions
Does exercise worsen arthritis?
No. This common fear is not supported by research. Controlled exercise improves cartilage nutrition and slows the process. Inactivity is what in practice causes harm; muscle loss increases joint load and accelerates the condition.
Is it advisable to have a joint replacement?
Surgery is considered where pain seriously restricts daily life despite adequate conservative treatment. That decision belongs to an orthopaedic specialist. Physiotherapy both delays the need for surgery and improves outcomes if surgery does become necessary.
Is walking harmful?
On the contrary, it is recommended. Walking improves circulation of joint fluid and nourishes cartilage. Distance should be increased gradually, and pain after activity should return to baseline within 24 hours — a practical rule showing the load was appropriate.
How much difference does losing weight make?
A considerable difference. The force through the knee when walking is several times body weight, so every kilogram lost corresponds to a much larger reduction in joint load. Outcomes are best when weight management and exercise are combined.
Methods used
Related conditions
Articles on this topic
Articles covering the topic in detail: symptoms, treatment, exercise and daily life.
- Diagnosis and symptoms· 6 min readWhat is knee osteoarthritis? Symptoms and stages
- Treatment course· 6 min readHow effective is non-surgical treatment in knee osteoarthritis?
- Exercise· 6 min readExercise in knee osteoarthritis: what and how much
- Daily living· 6 min readDaily life with knee osteoarthritis: weight, footwear, activity
- Treatment decision· 6 min readWhen is knee replacement needed? The decision criteria
The content on this page is for information only and does not replace medical diagnosis or treatment. Always consult a healthcare professional about your symptoms.
Assessment appointment
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