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Other Knee Treatments
Knee Injections in London
I run a consultant-led knee injection clinic in Mayfair, with further clinics in Chiswick and Brentford. Every injection is guided by ultrasound, which I perform myself, and is given only after a proper assessment of your knee. The options run from a steroid injection at £500, through hyaluronic acid knee gel, PRP and high-dose PRP, to Arthrosamid hydrogel at £3,500 and bone marrow concentrate. Which one, if any, depends on your knee and your goals.
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Find my Knee Age, free →Which knee injection is right for me?
The right knee injection is the one that matches the cause of your pain, the amount of healthy cartilage you still have, and what you want your knee to do next year, and for some people the honest answer is no injection at all.
Patients usually arrive with one of two stories. Some have been told by a friend, or by the internet, which injection they need, and want it booked. Others have had three injections elsewhere, none of them guided, none of them measured, and are no longer sure any of it works. Both deserve the same thing first: a proper diagnosis, an examination, imaging where it adds something, and a conversation about your life rather than just your scan.
No two patients with the same knee leave with the same plan. Your weight, your general health, your sleep, your work, the stairs you climb and the people you look after all shape what will actually help. An injection is added on top of a strength and load plan when that plan is in place and the injection will genuinely move things forward. We do not try everything at once and hope something works.
Ultrasound-guided knee injections
Ultrasound guidance means the medicine goes exactly where it is meant to go, rather than where a needle happens to land.
I perform every knee injection myself under ultrasound, at Lanserhof at The Arts Club in Mayfair, in Chiswick and at Syon Clinic in Brentford. Seeing the joint in real time lets me check for fluid, drain it first if needed, and place the injection inside the joint with confidence. It also means that if an injection does not help, we know it was not because it missed.
The Mayfair clinic is easy to reach from Kensington, Chelsea, Fulham, Pimlico, Battersea, Clapham, Wandsworth, Putney, Barnes and Wimbledon, and the Chiswick and Brentford clinics serve Hammersmith, Acton, Ealing, Richmond, Twickenham and Hounslow. Patients also travel in from Harrow, Pinner, Watford, Bushey, Rickmansworth, Windsor, Reading and across Surrey and Berkshire. Whichever clinic you choose, it is the same consultant, the same ultrasound and the same standard of assessment.
Steroid (cortisone) knee injection
A steroid injection is a quick, inexpensive way to calm an inflamed, swollen knee, and it costs £500.
It is the right tool when inflammation is driving the pain and you need a window of relief to get your rehabilitation going. It is not a long-term answer on its own, and repeated steroid injections into the same knee are something I keep to a minimum. You can read more on my steroid knee injection page.
Knee gel injections: hyaluronic acid and Arthrosamid
When people ask for a knee gel injection they usually mean one of two very different treatments: hyaluronic acid, which lubricates the joint for a period of months, or Arthrosamid, a hydrogel designed to stay in the knee.
Hyaluronic acid, which I use as Ostenil Plus, costs £700. It supplements the joint's own lubricating fluid and suits people with mild to moderate arthritis who want a gentle, low-risk option. More detail is on my hyaluronic acid knee injection page.
Arthrosamid is a different category altogether. It is a cross-linked polyacrylamide hydrogel that integrates into the lining of the joint and is intended to give long-lasting relief from a single treatment, at £3,500. It is a serious option for people with established knee arthritis who are not ready for, or not suited to, a knee replacement. I explain who it helps, and who it does not, on my Arthrosamid knee gel injection page.
PRP knee injections (platelet-rich plasma)
PRP uses a concentrate of your own platelets to calm inflammation and support the tissues of the knee, and for knee arthritis I use high-dose PRP, a single injection at £2,050. Standard PRP, at £950 per injection, is used mainly for tendon problems as a course of three.
High-dose PRP, using the Arthrex ACP Max system, starts from a much larger blood sample and delivers a far greater number of platelets than a standard preparation. For the right knee, at the right stage, it is one of the most useful biological tools I have. For the wrong knee it is an expensive disappointment, which is why the assessment comes first. See my PRP knee injection page for how I decide.
Stem cell knee injections (BMAC)
A BMAC injection uses bone marrow aspirate concentrate taken from your own pelvis, and it is what most people mean when they search for a stem cell knee injection.
I want to be plain about it: nothing currently available regrows lost cartilage, and nothing is a cure for arthritis. BMAC is a biological treatment that may reduce pain and inflammation in carefully selected patients, sometimes alongside surgery. My BMAC stem cell knee treatment page sets out what the evidence does and does not show.
How much do knee injections cost in London?
I publish my injection fees so you know the cost before you book: a steroid injection is £500, hyaluronic acid (Ostenil Plus) is £700, high-dose PRP is £2,050 (standard PRP for tendons is £950), and Arthrosamid is £3,500.
A new consultation is £350, and every injection follows an assessment, because the right decision matters more than the quickest one. My full fee schedule is on the pricing page, and my team will always confirm the cost in writing before anything is booked.
When an injection is not the answer
Sometimes the right treatment is not an injection at all, and as a surgeon I will tell you when that is the case.
Knee care goes wrong in two directions. Some people are injected again and again when the joint has moved beyond what an injection can do, and they lose years waiting. Others are rushed to an operation they never needed. Because I offer both, I have no reason to push you towards either. If your knee needs a robotic knee replacement, a partial knee replacement or a meniscus repair, I will say so, and explain why. If you would like to see how your knees compare with your age before you book, try the free Knee Age quiz.
Thinking about a knee injection?
Book a consultation and we will work out which treatment, if any, is right for your knee.
Knee Injection Questions
My knee injection fees are £500 for a steroid injection, £700 for hyaluronic acid, £2,050 for high-dose PRP (standard PRP for tendons is £950) and £3,500 for Arthrosamid. A new consultation is £350, and every injection is ultrasound-guided and follows a proper assessment.
A knee gel injection usually means either hyaluronic acid, which lubricates the joint for several months, or Arthrosamid, a hydrogel designed to stay in the knee and give long-lasting relief. They suit different knees, so the choice follows an assessment.
Neither is better for everyone. PRP tends to suit knees where inflammation is a large part of the pain, and hyaluronic acid suits people wanting a gentle lubricating option. The right choice depends on the stage of your arthritis, your goals and your general health.
Yes. I perform every knee injection myself under ultrasound guidance, so the treatment is placed precisely inside the joint.
I inject at Lanserhof at The Arts Club in Mayfair, in Chiswick and at Syon Clinic in Brentford. Most self-funding injection patients are seen in Mayfair.
At my clinic a hyaluronic acid knee gel injection (Ostenil Plus) is £700 and an Arthrosamid hydrogel injection is £3,500, both ultrasound-guided and given after a consultation, which is £350 for a new patient.
They can, for the right knee. Hyaluronic acid helps some people with mild to moderate arthritis for a number of months, and Arthrosamid is designed to give longer-lasting relief in established arthritis. Neither repairs cartilage, and neither suits every knee, which is why the assessment comes first.
A hyaluronic acid knee injection (Ostenil Plus) costs £700 with me, given under ultrasound guidance after a consultation.
High-dose PRP for knee arthritis is a single ultrasound-guided injection costing £2,050. Standard PRP, used mainly for tendon problems as a course of three, is £950 per injection.
High-dose PRP delivers a very large number of your own platelets, around 10 billion in my practice, prepared from a 60 to 90ml blood sample using the Arthrex ACP Max system, rather than the small sample used in many standard kits.
The main types are steroid (cortisone) to calm inflammation, hyaluronic acid to lubricate the joint, PRP made from your own platelets, Arthrosamid hydrogel for longer-lasting relief in arthritis, and bone marrow concentrate in selected cases. Each suits a different knee at a different stage.
There is no single most effective injection for everyone. For knee arthritis, trials suggest high-dose PRP gives longer relief than hyaluronic acid or steroid, and Arthrosamid is designed to last longer still; for an acutely inflamed knee, steroid works fastest. The right one depends on your knee, which is why I assess before I inject.
Injections do not repair cartilage, they do not work for everyone, and some, such as Arthrosamid and high-dose PRP, cost more. Steroid relief can be short-lived, and repeated steroid injections are best kept to a minimum. Any injection carries a small risk of infection, which ultrasound guidance and sterile technique keep low.
Yes. You can walk out of clinic and go about your day, though I suggest taking it easy for a day or two and avoiding heavy exercise. You should not drive immediately if the knee feels numb from the local anaesthetic.
You can book online through the website, call my team on 0207 859 4016 or email admin@ortholongevity.co.uk. If you are insured, check with your insurer whether they need a GP referral first.
Choose a clinic where a consultant examines you first, guides the injection with ultrasound, explains which injection suits your stage of arthritis and why, and is open about prices and the evidence. Be wary of anywhere that offers the same injection to everyone.
Patient Reviews
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Verified Doctify reviews from patients who have received knee injection treatment under the care of Dr Arj Imbuldeniya at OrthoLongevity.