Orthopaedic Innovation

Knee arthritis

Proven, trusted Orthopaedic surgery to get you back to living your life sooner

What is Knee Arthritis?

Knee arthritis is a condition that causes pain, swelling, and stiffness in the knee joint.

It happens when the smooth cartilage (a protective layer that cushions the bones) wears down over time.

Without this cushion, the bones rub against each other, making movement painful. Knee arthritis gets worse over time if left untreated.

Types of knee arthritis

Osteoarthritis (OA)

The most common type, caused by wear and tear over time.

Rheumatoid arthritis (RA)

A disease where the body’s immune system attacks the joints, causing swelling and pain.

Post-traumatic arthritis

Arthritis that develops after a knee injury, like a fracture (broken bone) or torn ligament.

Gout & pseudogout

Conditions caused by tiny crystal deposits in the joint, leading to sudden pain and swelling.

What causes knee arthritis?

Many factors can lead to knee arthritis, including:

Age

The risk increases as you get older, especially after 50.

Previous injuries

Past injuries, such as a torn ligament or fracture, can make arthritis more likely.

Excess weight

Extra body weight puts more pressure on the knee joint, causing faster cartilage breakdown.

Family history

Arthritis can run in families, meaning you may have a higher chance of developing it.

Repetitive stress on the knee

Jobs or activities that involve lots of bending or heavy lifting can wear out the joint faster.

Common symptoms of knee arthritis

Pain

It often feels worse when moving and better when resting.

Stiffness

The knee may feel tight, especially in the morning or after sitting for a long time.

Swelling

The knee may look puffy due to inflammation (the body’s response to irritation or injury).

Reduced movement

It may become harder to bend or straighten your knee.

Grinding or clicking feeling

This happens when the bones rub against each other due to cartilage loss.

How is knee arthritis diagnosed?

A doctor will diagnose knee arthritis using:

Medical history and physical exam

Asking about symptoms and checking knee movement.

X-rays

Pictures of the knee to see if the bones are rubbing together.

MRI or CT scans

Advanced imaging to check for damage to soft tissues (like cartilage and ligaments).

Blood tests

If rheumatoid arthritis is suspected, blood tests can check for signs of inflammation.

Treatment options for knee arthritis

Non-surgical treatments

For mild or moderate arthritis, treatment usually includes:

Lifestyle changes

Losing weight and doing gentle exercises to reduce pressure on the knee.

Physiotherapy (exercise program)

Special exercises to strengthen the muscles around the knee and improve movement.

Medications (pain relief)

Painkillers like paracetamol or ibuprofen, and stronger anti-inflammatory injections (steroids, hyaluronic acid, or Arthrosamid).

Bracing and support devices

Knee braces can help support the joint and reduce discomfort.

Surgical treatments

If arthritis is severe and other treatments don’t help, surgery may be an option:

Knee arthroscopy (keyhole surgery)

A small camera is inserted into the knee to clean out damaged cartilage (works best in early arthritis).

Osteotomy (Bone realignment surgery)

The leg bone is adjusted to shift weight off the damaged part of the knee.

Partial knee replacement

Only the damaged part of the knee joint is replaced.

Total knee replacement

The entire knee joint is replaced with an artificial joint for long-term pain relief.

Living with knee arthritis

You can manage knee arthritis with simple changes to your daily routine:

Stay active

Exercises like swimming and cycling are gentle on the joints but keep them strong.

Use supportive devices

Walking sticks or knee braces can help take pressure off the knee.

Hot and cold therapy

Using heat packs can relax stiff muscles, while ice packs can reduce swelling.

When should you see a specialist?

If your knee pain is stopping you from doing everyday activities, and painkillers or exercise are no longer helping, it may be time to see an orthopaedic specialist.

They can assess your condition and recommend the best treatment, including surgery if needed.

Meet your knee specialists

At Orthopaedic Innovation, our world leading surgical team offers a range of treatment options for people experiencing arthritis of the knee.
Locations

The Harley Street Hospital,
19 Harley Street,
London, W1G 9QJ
The Cromwell Hospital,
164-178 Cromwell Road,
London SW5 0TU
The London Independent Hospital,
1 Beaumont Square,
London E1 4NL
Medical disclaimer
The information provided on this website is for informational purposes only and should not be considered medical advice. It is not intended to replace consultation with a qualified healthcare professional. While we strive to provide accurate and up-to-date information, medical knowledge is constantly evolving, and individual cases may vary. Any surgical or non-surgical treatments discussed on this website should be considered in consultation with a medical professional who can assess your individual needs and medical history.
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