One Ostenil Plus Injection Can Give Your Knee Up to a Year of Relief — Here’s How

One Ostenil Plus Injection Can Give Your Knee Up to a Year of Relief, Here’s How

If your knee pain has stopped responding to physiotherapy, painkillers are no longer enough, and you are not ready for surgery, you are not out of options. Thousands of patients across London are now choosing an Ostenil Plus injection as the step that finally gives them meaningful, lasting relief. A single treatment, delivered in under 30 minutes at our clinic in Fitzrovia, can reduce pain and improve joint movement for up to a year in many patients.

In this guide, we explain exactly what Ostenil Plus injection is, how it works inside the joint, who it is suitable for, what the procedure involves at Bilba Clinic, and what you can realistically expect from your results.

What Are Viscosupplementation Injections

Viscosupplementation injections are a category of joint treatment that work by replenishing the natural fluid inside a joint. Rather than targeting inflammation the way a steroid does, viscosupplementation injections restore the lubricating and cushioning properties of the synovial fluid that surrounds the joint surfaces.

In a healthy joint, synovial fluid acts as both a shock absorber and a lubricant, keeping the cartilage surfaces protected and allowing smooth, pain-free movement. In patients with osteoarthritis or cartilage degeneration, this fluid thins and loses its natural viscosity. The result is increased friction, stiffness, pain and a gradual worsening of joint function.

Viscosupplementation injections work by introducing hyaluronic acid directly into the joint space to restore this lost cushioning. They are CE-marked medical treatments with an established clinical record and are widely used across private sports medicine and musculoskeletal clinics in the UK

What Is an Ostenil Plus Injection

Ostenil Plus is one of the most widely used viscosupplementation treatments available in the UK. It is a sodium hyaluronate injection containing 40mg of highly purified hyaluronic acid in a 2ml solution. This makes it a higher-concentration option compared to standard Ostenil, designed to deliver effective results with a single injection per treatment cycle in most cases.

What makes Ostenil Plus 40mg injection clinically distinct is the addition of mannitol, a simple sugar derivative that protects the hyaluronic acid molecules from breaking down too quickly inside the joint. This means the treatment stays active for longer, extending the period of relief compared to earlier-generation viscosupplements.

The hyaluronic acid in Ostenil Plus is manufactured through a fermentation process and contains no animal proteins, which significantly reduces the risk of allergic reaction. It is a CE-marked medical device with an extensive safety profile built up over many years of clinical use across Europe.

At our sports medicine clinic in London, we offer Ostenil Plus as a core part of our joint injection service for patients with knee osteoarthritis, hip pain, shoulder joint degeneration and other synovial joint conditions.

How Does an Ostenil Plus Injection Work

When we deliver an Ostenil Plus knee injection directly into the synovial joint space, the hyaluronic acid integrates with the existing joint fluid and begins restoring its natural properties. This produces several beneficial effects that explain why patients experience meaningful improvement in both pain and mobility.

The three primary mechanisms are:

Restoring joint lubrication. The sodium hyaluronate injection coats the joint surfaces, reducing the friction that causes pain during movement. Patients with knee stiffness often notice a meaningful improvement in how freely the joint moves within the first few weeks.

Providing mechanical cushioning. The viscosupplementation injection acts as a shock absorber within the joint, reducing the impact load transmitted through the cartilage during walking, climbing stairs and daily activity.

Stimulating natural hyaluronic acid production. Clinical evidence suggests that introducing exogenous hyaluronic acid into the joint can stimulate the synovial tissue to increase its own production of the substance over time. This contributes to longer-lasting results beyond the physical presence of the injected solution.

The mannitol component in Ostenil Plus slows the breakdown of the HA molecules, allowing this process more time to take effect and extending the window of symptomatic relief compared to a standard hyaluronic acid joint injection.

What Conditions Can an Ostenil Plus Injection Treat

The most common use of Ostenil Plus injection is as a knee osteoarthritis injection, but it is suitable for use in any synovial joint where viscosupplementation is clinically appropriate. At our clinic, we assess every patient individually before recommending treatment.

Conditions we treat with Ostenil Plus include:

• Knee osteoarthritis and cartilage degeneration: This is the most established use of Ostenil Plus. Patients with mild to moderate knee osteoarthritis who are not yet candidates for surgery, or who wish to delay it, typically respond well. It is also suitable as a knee arthritis injection treatment for patients who have found that steroid injections are no longer providing sufficient relief.
• Hip joint degeneration: An injection for hip arthritis can be particularly effective for patients experiencing groin pain, reduced range of movement or difficulty with walking and stairs.
• Shoulder joint pain: Patients with shoulder osteoarthritis or significant cartilage wear affecting daily function and sleep can benefit from a hyaluronic acid joint injection into the glenohumeral joint.
• Ankle, elbow and smaller joints: Ostenil Plus can be administered into other peripheral synovial joints where clinically appropriate following a full assessment.
• Stiff knee joint treatment after sports injury: For active patients and athletes managing post-injury joint degeneration, a sports injury joint treatment combining Ostenil Plus with physiotherapy can support a return to activity without surgery.

If you have been told your joint pain is not yet severe enough for surgery but conservative treatment is no longer working, an Ostenil Plus injection may represent the most appropriate next step.

Ostenil Plus vs Steroid vs PRP Injection

One of the most common questions we are asked is how Ostenil Plus compares to the other joint injection options available at our clinic. The table below summarises the key differences to help you understand which treatment may be most appropriate for your situation.

Steroid injections are fast and effective for managing acute inflammation and pain flares, but their effect typically fades within weeks and repeated use over time carries some risk to joint tissue integrity.

Ostenil Plus works more gradually but addresses the underlying mechanical issue of insufficient joint lubrication, which is why results last considerably longer.

PRP injection uses growth factors from your own blood to stimulate natural tissue repair and can be a strong option for younger, more active patients with early to moderate osteoarthritis. At our bilba clinic, some patients choose to combine PRP with Ostenil Plus as part of a more comprehensive joint treatment plan.

Our sports medicine clinicians will discuss your history, symptoms and goals in detail during your consultation and help you identify the most appropriate option for your individual situation. You can view full details of all our joint injection treatments on our Sports Medicine page.

What Happens During an Ostenil Plus Injection at Our Bilba Clinic

At Bilba Clinic, every Ostenil Plus injection is performed as an image-guided joint injection. We use ultrasound guidance to visualise the joint in real time and confirm accurate needle placement before the solution is delivered. This is a standard part of our approach and significantly improves both the precision of the injection and the clinical outcome, particularly for joints such as the hip and shoulder where landmark-guided injection carries a higher risk of inaccurate placement.

Here is what to expect on the day of your treatment:

• Before the injection. Your clinician will review your assessment findings, confirm your suitability for treatment and walk you through the procedure in full. You will have an opportunity to ask any questions before we begin. The skin over the injection site is cleaned thoroughly with an antiseptic solution.
• During the injection. For deeper joints, we apply local anaesthetic to the area to minimise discomfort. The ultrasound probe is positioned over the joint and the needle is guided in under direct visualisation. The Ostenil Plus solution is then delivered into the synovial space. Most patients describe the sensation as mild pressure rather than significant pain. The procedure typically takes between 15 and 30 minutes in total.
• After the injection. You will rest briefly before leaving and we will provide you with written aftercare instructions. Most patients are able to drive and return to light activities on the same day.

Ostenil Plus Aftercare and Recovery Time

Ostenil Plus recovery time is straightforward for the majority of patients. Some mild soreness, localised warmth or slight swelling around the injection site is entirely normal in the first 24 to 48 hours and reflects a normal tissue response. This settles without specific intervention in most cases.

• What to do in the first 48 hours: Avoid strenuous exercise, prolonged standing and high-impact activity. A cool compress applied to the area can help manage any initial discomfort. Paracetamol is suitable for pain relief if needed. We advise avoiding ibuprofen and other anti-inflammatory medications for several days following the injection as these can interfere with the hyaluronic acid’s action in the joint.
• Returning to activity: Light walking is encouraged from the day of treatment. Walking promotes healthy joint circulation and helps the Ostenil Plus integrate into the joint environment. Avoid running, gym training and sport for at least 48 hours, after which activity can be reintroduced gradually. Your clinician will give you specific guidance based on which joint was treated and your level of activity.
• Ostenil Plus side effects: The most commonly reported side effects are temporary soreness and mild swelling at the injection site. Serious adverse reactions are rare. The hyaluronic acid in Ostenil Plus contains no animal proteins, which reduces the risk of allergic response significantly. We discuss all potential side effects with you during your consultation so there are no surprises on the day.

How Long Does Ostenil Plus Take to Work and How Long Does It Last

Unlike cortisone injections, which can produce relief within days, Ostenil Plus works more gradually. Most patients begin to notice a meaningful improvement in pain and joint mobility between two and four weeks after their injection. This improvement typically continues to develop over the following weeks as the hyaluronic acid integrates into the joint environment and begins stimulating natural HA production.

How long does Ostenil Plus last?
For the majority of patients, results are sustained for between six months and one year. Some patients report continued benefit beyond twelve months, particularly when treatment is combined with a structured physiotherapy programme that strengthens the muscles surrounding the joint.

Results do vary depending on the severity of the underlying joint condition, body weight, activity levels and how early in the degeneration process treatment is started. Patients with mild to moderate osteoarthritis tend to achieve the best and longest-lasting outcomes. When symptoms begin to return, repeat treatment is straightforward. Unlike corticosteroid injections, there is no clinical limit on how many times viscosupplementation can be repeated, as it does not carry the same risk of joint tissue damage with ongoing use.

Ostenil Plus Injection Cost in London

At Bilba Clinic, The Ostenil Plus injection price at our clinic is £720 per joint (unilateral). This includes the injection procedure itself.

An initial consultation is required before treatment, priced at £300. If you are returning for repeat treatment following a previous assessment with us, a follow-up consultation is £215.

We believe complete pricing transparency is part of providing good clinical care. There are no hidden fees and your clinician will confirm exactly what your appointment involves before you commit to anything. Full updated pricing for all our sports medicine treatments is available on our pricing page.

Frequently Asked Questions About Ostenil Plus Injection

What are viscosupplementation injections and how are they different from steroids? 

Viscosupplementation injections restore the natural lubricating fluid inside the joint using hyaluronic acid. Steroid injections reduce inflammation rapidly but do not address the underlying loss of joint lubrication. Viscosupplementation works more gradually but produces longer-lasting results and does not carry the tissue risks associated with repeated steroid use.

Is an Ostenil Plus injection the best injection for knee osteoarthritis? 

For patients with mild to moderate knee osteoarthritis, Ostenil Plus is one of the most clinically supported options available. It is particularly appropriate when inflammation is not the primary issue, when steroid injections have stopped being effective, or when the patient wants a longer-lasting solution. Whether it is the right choice for you depends on your specific diagnosis and history, which we assess fully before recommending any treatment.

Are viscosupplementation injections painful? 

Most patients experience only mild discomfort during the procedure. We use ultrasound guidance for precise needle placement and apply local anaesthetic where appropriate. The sensation is typically described as pressure rather than sharp pain. Post-procedure soreness is usually mild and settles within 48 hours.

How many Ostenil Plus injections do I need? 

In most cases, a single Ostenil Plus 40mg injection is sufficient for one treatment cycle due to its higher concentration formulation and the protective effect of mannitol. In some patients with more advanced joint degeneration, your clinician may recommend a course of injections. This will be confirmed during your consultation.

Does Ostenil Plus work for hip and shoulder pain as well as the knee? 

Yes. While Ostenil Plus knee injection is the most common application, it can be used in any synovial joint including the hip, shoulder, ankle and elbow. We use ultrasound guidance for all joint injections at our clinic, which makes treatment of deeper joints such as the hip both safe and accurate.

Is Ostenil Plus available on the NHS? 

Viscosupplementation injections including Ostenil Plus are not routinely funded through the NHS in England. Private treatment is therefore the most practical route for most patients seeking this therapy in London.

Book Your Ostenil Plus Injection at Bilba Clinic in London

If joint pain is limiting your movement, disrupting your sleep or stopping you from doing the things you enjoy, you do not need to wait for it to get worse before acting. Our sports medicine team at Bilba Clinic offers expert assessment and Ostenil Plus injection in London with same-day and next-day appointments frequently available.

We are based at 57 Great Titchfield Street, Fitzrovia, London W1W 7PN, a short walk from Oxford Circus and Great Portland Street stations.

To find out whether an Ostenil Plus injection is right for your joint condition, book your consultation online or contact our team directly at info@bilbaclinic.co.uk or on +44 (0) 7858 848 244.

You can also visit our Sports Medicine page for full details of every treatment we offer, or view our complete treatment pricing before you book.

Take the first step toward lasting joint relief. Book your Ostenil Plus consultation at Bilba Clinic today.