Concierge musculoskeletal · London
Ultrasound-guided HA knee injection - London
A precise, non-steroid option for knee osteoarthritis. A single ultrasound-guided injection of hyaluronic acid restores the viscoelasticity of your joint fluid, easing pain for 6 to 12 months and buying real time before a replacement discussion.
What it is
Hyaluronic acid viscosupplementation, explained honestly.
Hyaluronic acid (HA) is a naturally occurring polymer that gives synovial fluid its slippery, shock-absorbing quality. In an osteoarthritic knee, native HA is thinner and shorter-chain. An intra-articular HA injection tops up and restores the viscoelasticity of that fluid. It is not simply an anti-inflammatory, and it is not a steroid: the mechanism is mechanical lubrication and cushioning first, with secondary effects on chondrocyte biology and pain signalling.
When it fits
Who benefits from a HA knee injection.
- Knee OA, Kellgren-Lawrence grade 2 to 3. The clearest evidence base sits in mild-to-moderate radiographic disease.
- Deferring knee replacement. Patients who want to hold off surgery for a season, a trip or a life event.
- Preference over steroid. Those who have had steroid before and want a longer, non-steroid alternative.
- Athletes with mild OA. Runners, cyclists and racquet-sport players managing early degenerative change.
Preparations
Single-shot and three-shot options.
Single-shot regimens. Synvisc-One (6 mL, high molecular weight, cross-linked hylan G-F 20), Durolane (3 mL, stabilised NASHA) and Ostenil Plus (2 mL) all deliver a full course in one clinic visit.
Three-shot regimens. Classic Synvisc (2 mL weekly for three weeks) and Ostenil 3x weekly remain options where a graduated titration is preferred, or where the patient responds better to smaller repeated doses.
The procedure
Why ultrasound guidance is not optional.
The knee is done via a suprapatellar or lateral parapatellar approach under real-time ultrasound. Landmark-only injections miss the joint space in roughly 30 per cent of cases in published series, and HA that lands in soft tissue does nothing. The needle is seen entering the recess, a small volume of local anaesthetic confirms placement, and the HA is delivered slowly. The whole visit takes 10 to 15 minutes.
Efficacy
What the evidence actually says.
Meta-analyses in knee OA show WOMAC pain reduction of 30 to 40 per cent at 6 months against placebo. Onset is gradual (2 to 6 weeks), peak effect sits around 8 to 12 weeks, and typical duration is 6 to 12 months. A repeat course every 12 months is the pragmatic pattern where the first response was worth it. If a first course delivers nothing by 3 months, a second course is unlikely to help and the plan is revisited.
Cost
London pricing: £450 to £950 (£1,200 for premium).
- Ostenil Plus (single-shot): £450 to £600
- Synvisc-One (single-shot): £750 to £950
- Durolane (single-shot): £850 to £1,200
- Ultrasound guidance, if billed separately: +£150 to £280
Most London MSK clinics quote a bundled figure that includes guidance and consumables.
Where in London
Vetted London units for HA viscosupplementation.
- Fortius Clinic (Marylebone and Wimbledon)
- HCA The Wellington Hospital MSK, St John's Wood
- Cromwell Hospital MSK (BUPA), Kensington
- The London Orthopaedic Clinic, Harley Street
- London Sports Injury Clinic, Marylebone
- GenesisCare Orthobiologics, Cromwell Road
HA vs steroid
Two different tools for two different problems.
Steroid works in days and is excellent for acute inflammatory flares, but relief usually fades within 6 to 12 weeks and repeated intra-articular steroid raises real long-term concerns about cartilage health. HA is slower to onset and does not settle a flare, but lasts longer, carries no comparable cartilage concern and pairs well with a strengthening programme. In practice we often use steroid to break a flare and HA for the sustained 6 to 12 month plan.
Related
Sits alongside these options.
- Knee arthroscopy for mechanical symptoms.
- Hip and knee replacement for end-stage disease.
- BMAC (bone marrow aspirate concentrate) as an orthobiologic alternative.
- Arthritis condition guide for the wider picture.
FAQs
Common questions.
How much does an ultrasound-guided HA knee injection cost in London?
Ostenil Plus £450 to £600, Synvisc-One £750 to £950, Durolane £850 to £1,200. Guidance adds £150 to £280 when billed separately; most London MSK clinics quote a bundled figure.
How long does it last?
Effect builds over 4 to 6 weeks and lasts 6 to 12 months. WOMAC pain reduction of 30 to 40 per cent at 6 months is a fair expectation.
Is HA better than a steroid injection?
Steroid works faster but shorter, with long-term cartilage concerns from repeat use. HA works slower but longer, without that concern. Different tools, different situations.
Why does ultrasound guidance matter?
Blind knee injections miss the joint space in roughly 30 per cent of cases. HA that lands in soft tissue does nothing. Guidance is the difference between a paid-for placebo and a working treatment.
Which preparation is best?
No universal winner. Single-shot Synvisc-One and Durolane are the most convenient; Ostenil Plus is well-priced; three-shot regimens still have a place where slower titration is preferred.
Who is not a good candidate?
End-stage (KL 4) knees, mechanical locking, active joint infection and significant inflammatory arthropathy need a different plan. A short consultation clarifies the right pathway.
Pulse Atlas Health
Book an ultrasound-guided HA knee injection in London.
Consultant MSK review, image-guided injection at a vetted London unit, and a firm quote back within one working day.