New Knee Arthritis Treatments 2026. What The Headlines Really Mean

14 Oct

October 2026 brought a run of knee arthritis headlines, from Stanford scientists regrowing cartilage to an epilepsy drug that protects joints. The most exciting findings are still in mice and laboratory tissue, years from a clinic. Others, such as an artery procedure called genicular artery embolisation and a simple walking adjustment, are already being used in people, with real but limited evidence. This guide explains each study plainly and sets out what you can have for a painful knee today.

Key points

Stanford researchers reported in Science that blocking an ageing enzyme called 15-PGDH regrew smooth joint cartilage in old mice and in human cartilage in the laboratory. There are no human cartilage trials yet.
Yale researchers reported that lacosamide, an approved epilepsy medicine, protected cartilage in laboratory and animal studies when given as a slow-release knee gel. It has not been tested for arthritis in people.
A Berlin study of 194 patients in Radiology found genicular artery embolisation reduced knee pain over 12 months, but it had no control group, and sham-controlled trials have so far found no clear advantage over placebo.
At The London PRP Clinic by The Wellness, ultrasound-guided knee PRP is from £595 to £995 per treatment, with a course of 3 priced at 10 percent off booking individually.

Want to know which knee treatments are real options for you? Message our doctors on WhatsApp or email team@thewellnesslondon.com.

The headlines, explained

Stanford. Regrowing cartilage by blocking an ageing enzyme

What they did. Researchers at Stanford Medicine, publishing in Science, studied 15-PGDH, an enzyme they describe as a gerozyme because it increases with age. Its level roughly doubled in the knee cartilage of ageing mice. Blocking it with a small-molecule medicine, either by mouth or injected into the knee, thickened cartilage in old mice and shifted it towards the smooth cartilage that lines healthy joints. In mice with an injury similar to a torn ACL, treatment reduced the arthritis that usually follows. Human cartilage taken during knee replacement began to regenerate in the laboratory after a week of treatment.

What it means for you now. This is a striking result, but it is in mice and laboratory tissue. An oral version has been tested for safety in healthy volunteers for a muscle condition, and the researchers hope to start cartilage trials. Several authors hold patents and a financial interest in the approach. It is likely to be years before it could be offered.

Yale. An epilepsy medicine that protects cartilage

What they did. Researchers at Yale, publishing in Bioactive Materials, studied lacosamide, an approved epilepsy medicine that blocks a channel called Nav1.7 found in pain nerves and cartilage cells. In laboratory and animal studies, low doses encouraged cartilage-building proteins and reduced breakdown. Delivered as a gel injected into the knee that releases the medicine over weeks, 1 injection every 4 weeks protected cartilage better than daily tablets.

What it means for you now. The results are preclinical, the effective dose range was narrow, and it has not been tested for arthritis in people. Taking lacosamide for knee pain is not appropriate.

Berlin. Genicular artery embolisation

What they did. Researchers at Charité in Berlin, publishing in Radiology, treated 194 people with persistent knee arthritis pain using genicular artery embolisation, in which tiny dissolvable particles are passed through a catheter to block abnormal blood vessels around the knee lining. Median pain fell from 7 to 3 out of 10 by 6 months and stayed there at 12 months, and 80 percent of those assessed at 12 months had a meaningful improvement. There were no serious complications.

What it means for you now. The study had no comparison group, and about 1 in 5 patients had dropped out by 12 months. A 2026 sham-controlled trial and a meta-analysis of 3 randomised trials found no clear advantage over a sham procedure. It is an option offered by some interventional radiologists, but the evidence is not yet settled.

Utah and Stanford. Changing how you walk

What they did. In a 1-year randomised trial of 68 adults with arthritis on the inner side of the knee, published in The Lancet Rheumatology, participants learned to angle their foot slightly inward or outward, guided by a vibrating device on the shin, for at least 20 minutes a day. Pain improved by 2.5 points out of 10, against 1.3 points with sham training.

What it means for you now. This is a low-risk approach that a skilled physiotherapist can help with, and it sits alongside strengthening exercise as part of good care.

Want an honest view of the newest options? Ask our doctors on WhatsApp.

What you can have today

Exercise, weight and walking

Strengthening exercise and weight management remain the foundation of treatment for knee arthritis, and the gait study adds a simple, evidence-based tool alongside them.

PRP

PRP uses growth factors from your own blood to reduce pain and improve function. A 2025 network meta-analysis of 10 randomised trials found a course of 3 injections outperformed a single injection at 1, 3 and 6 months, and a 2025 meta-analysis in the American Journal of Sports Medicine found the improvement was clinically significant and influenced by platelet concentration. A 2021 JAMA trial found PRP no better than placebo, so the evidence is favourable but contested. See how many PRP injections for the knee.

Other injections

Steroid gives fast but short-lived relief. Hyaluronic acid helps some people for months. Arthrosamid is a permanent gel given once. Every option is compared in knee injections London and Arthrosamid vs PRP.

What does not help

Keyhole surgery to wash out or trim an arthritic knee does not help most people, as explained in keyhole knee surgery for arthritis.

When to consider surgery

Severe arthritis with pain at night and at rest needs a surgical opinion. Our guide for younger patients is too young for a knee replacement.

What happens at The London PRP Clinic by The Wellness

You are assessed by a doctor who examines the knee, hip and the way you walk, and reviews the knee with ultrasound. X-ray or MRI is arranged at the London centre best equipped for that question if needed. You then receive a written recommendation across every option, including new ones we do not provide, with the reasons for it. If PRP is right, a course of ultrasound-guided injections is given 1 to 2 weeks apart alongside strengthening. The evidence across conditions is in PRP success rates.

What it costs

At The London PRP Clinic by The Wellness, there are 3 ways to begin.

The diagnostic package, from £695, covers assessment, imaging and blood tests, and gives you a written recommendation whatever you decide.

A single ultrasound-guided knee PRP injection is from £595 to £995.

A course of 3 injections is priced at 10 percent off booking them individually. More detail is in joint PRP cost in London.

Ask what your knee plan would cost. Message us on WhatsApp.

Why people choose The London PRP Clinic by The Wellness

Every treatment is performed by a GMC-registered doctor, and no clinician treats a patient here until they have completed 100 supervised treatments. Every knee injection is ultrasound guided. We read new research as it is published and explain plainly what it means for you, including when a headline is not yet a treatment. We see patients at 10 Portman Square in Marylebone and the Light Centre in Belgravia, and report an 87 percent patient success rate and more than 187 five-star reviews.

Book your knee assessment. Message us on WhatsApp, email team@thewellnesslondon.com, or call +44 20 3951 3429.

Frequently asked questions about new knee arthritis treatments

Can cartilage be regrown in 2026?

Not yet in people. Stanford researchers regrew cartilage in old mice and in human cartilage in the laboratory by blocking the enzyme 15-PGDH, but human cartilage trials have not started.

Is the epilepsy drug lacosamide a treatment for knee arthritis?

No. It protected cartilage in laboratory and animal studies as a slow-release knee gel, but it has not been tested for arthritis in people.

Does genicular artery embolisation work for knee pain?

A 2026 study of 194 patients found lasting pain relief, but without a control group. Sham-controlled trials have so far found no clear advantage over placebo.

Can changing how I walk help knee arthritis?

Possibly. In a 1-year randomised trial of 68 adults, personalised foot-angle training reduced pain by 2.5 points out of 10, against 1.3 with sham training.

What is the best knee arthritis treatment available now?

Strengthening exercise and weight management first, then injections such as PRP, steroid, hyaluronic acid or Arthrosamid depending on your knee, and surgery for severe disease.

How much does knee PRP cost in London?

At The London PRP Clinic by The Wellness, a single ultrasound-guided injection is from £595 to £995, and a course of 3 is priced at 10 percent off booking individually.

This article is for information and does not replace personal medical advice. All treatments at The London PRP Clinic by The Wellness are performed by GMC-registered doctors. Reviewed by a GMC-registered doctor at The London PRP Clinic by The Wellness. Last updated October 2026.

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