Treatment course6 min read
How effective is non-surgical treatment in knee osteoarthritis?
The order of treatment in knee osteoarthritis is clear in international guidelines: exercise and weight management come first, with other methods added on top. Skipping that order is common but ineffective.
Exercise and weight
Quadriceps and hip strengthening has the strongest evidence for reducing pain and improving function. The effect size is comparable to many drug treatments.
Aerobic activity is added. Walking, cycling and pool work support both joint nutrition and general health.
Reducing excess weight directly lowers load on the knee. Each kilogram of body weight translates to several times that load at the knee when walking.
Other methods
Pain relief opens a window for exercise. The aim is not to mask pain but to make movement possible.
An intra-articular steroid injection can give short-term relief. Its effect is limited to weeks or months and frequency is restricted because of possible effects on cartilage with repeated use.
Evidence for hyaluronic acid injections and supplements is contested. There is consensus that they do not replace exercise and weight management.
The replacement decision
Knee replacement is considered in advanced cases unresponsive to conservative treatment. The decision rests not on X-ray stage but on the effect of pain and functional loss on quality of life.
Pain persisting at rest at night, inability to walk short distances and marked limitation of daily tasks are grounds for surgical assessment.
Good muscle strength before surgery directly affects the outcome afterwards. The exercise programme therefore continues even in patients scheduled for replacement.
Key points
- Exercise is the best-evidenced treatment and comes first.
- Its effect size is comparable to many drug treatments.
- Each kilogram of body weight becomes several times that load at the knee.
- Injections do not replace exercise.
- The replacement decision rests on quality of life, not X-ray stage.
Frequently asked questions
Does glucosamine help?
The evidence is contested and most guidelines do not recommend routine use. Trying it is not harmful but it should not replace exercise and weight management.
Should I use a knee brace?
In selected patients, particularly single-compartment arthritis, braces that alter load distribution can help. There is no strong evidence for routine use.
How long until results?
Clear improvement in pain and function is expected within six to twelve weeks on a regular programme. Maintaining gains depends on continuing it.
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This content is for information only and does not replace medical diagnosis or treatment. Response to treatment varies between individuals. Please consult a healthcare professional about your symptoms.