ADULT KNEE CARE
Joint preservation & knee injections
Knee injections in Manchester and joint-preserving options are considered alongside rehabilitation, with treatment guided by your symptoms, diagnosis and goals.
What does joint preservation mean?
Joint preservation describes approaches that aim to retain the natural joint while addressing symptoms or a specific mechanical problem. It includes rehabilitation and, for selected patients, surgery such as meniscal repair or an osteotomy.
Injections may help with symptoms, but symptom relief is not the same as repairing cartilage or stopping arthritis. No option can guarantee that you will avoid a future knee replacement.
Start with your knee, not a procedure.
Your consultation considers where the pain comes from, the pattern of arthritis or injury, alignment, stability, previous treatment and your goals. Examination and appropriate imaging help guide the discussion.
Physiotherapy, strength and movement work, rehabilitation and activity advice remain part of that discussion. Weight management may also help where appropriate.
Knee injection options
Steroid, PRP, viscosupplement and hydrogel injections are different treatments. Their suitability and evidence are not interchangeable. The aim, likely benefit, cost and alternatives should be clear before you decide.
Steroid injections into the joint
Corticosteroids are anti-inflammatory medicines. In knee osteoarthritis, an injection may be considered when other medicines are unsuitable or ineffective, or to support therapeutic exercise.
NICE describes relief as short term, typically 2–10 weeks. Response varies; an injection does not reverse arthritis.
Possible effects include a temporary pain flare, skin or fat changes around the injection site and increased blood sugar, particularly with diabetes. Infection is uncommon but important. Repeated injections need individual consideration.
NICE recommendations ↗ · NHS steroid injection information ↗
PRP: platelet-rich plasma
PRP is prepared from a sample of your own blood, processed to concentrate platelets, then injected into the knee. It is discussed as a treatment for symptoms; it should not be presented as proven cartilage regeneration.
Results vary, and preparation methods and treatment schedules differ. NICE identifies limitations in the quality of evidence for effectiveness and recommends special arrangements for governance, consent and audit or research.
The consultation should explain that uncertainty, the proposed treatment course and alternatives. Temporary pain or swelling can occur; using your own blood does not remove the risks of an injection, including infection.
Viscosupplement injections
For selected patients, some single-injection hyaluronic acid products may provide relief from knee osteoarthritis symptoms for up to six months. Benefit is not guaranteed: response and duration vary with the individual and the product used.
Viscosupplements contain hyaluronic acid, a substance found in joint fluid. Treatment aims to ease symptoms; it is not a cure for arthritis and does not rebuild worn cartilage.
NICE recommends against intra-articular hyaluronan injections for osteoarthritis because its evidence review did not establish benefit for pain, function or quality of life compared with placebo. This recommendation is about evidence of effectiveness, rather than simply the treatment not being a cure.
Private treatment remains available following individual assessment. Self-pay patients can request a quotation. Patients wishing to use insurance should confirm whether their policy covers the specific product and procedure and obtain any required authorisation before treatment. We will discuss the evidence, potential benefit, risks and alternatives before you decide.
Pain and swelling may follow an injection. Infection and an inflammatory reaction are also possible.
Read NICE guidance on hyaluronan ↗ · Product-specific six-month study information ↗
Hydrogel: Arthrosamid®
Arthrosamid is the hydrogel option discussed here. It is a non-absorbable polyacrylamide hydrogel implant intended for the symptomatic treatment of adult knee osteoarthritis. It remains in the joint lining; it is not a steroid, PRP or hyaluronic acid injection.
Some patients obtain symptom improvement, but the response and its duration vary. It is not a cartilage replacement or a guaranteed alternative to surgery.
Pain and swelling may occur after injection, and infection is a potential complication. Because it is a permanent implant, eligibility and precautions require careful review. Previous knee injections, surgery, infection and your medical history affect suitability.
Tell future treating clinicians about the implant, including before surgery or dental procedures. The manufacturer’s patient safety information should be reviewed as part of your consultation.
Knee arthroscopy options
Knee arthroscopy is keyhole surgery using a small camera and instruments. It may be appropriate for a specific injury after assessment; it is not a routine treatment for arthritic knee pain.
Meniscal repair
Where a tear is suitable, stitching the meniscus aims to retain its cushioning tissue. Healing depends on the tear and tissue quality. Rehabilitation may include restrictions on weight-bearing and knee bending.
Partial meniscectomy
If repair is unsuitable, selected tears may be treated by trimming the damaged part while retaining as much meniscus as possible. Not every tear benefits from surgery.
Cartilage and osteochondral problems
The size, location and stability of a defect guide whether an arthroscopic procedure is appropriate. The specific technique, alternatives and rehabilitation should be discussed before treatment.
Recovery and risks
Recovery depends on the procedure. A repair can need more protection than trimming. Risks include infection, bleeding, blood clots, stiffness, nerve or vessel injury, persistent symptoms and further surgery.
NICE advises against arthroscopic washout or debridement for osteoarthritis. Identifying a treatable injury is different from promising to “clean out” arthritis.
High tibial osteotomy
For selected patients with a suitable pattern of knee arthritis and alignment, an osteotomy changes the alignment of the leg to shift load away from an affected compartment.
It is a substantial operation, with a period of bone healing and rehabilitation. Suitability depends on more than age: alignment, joint damage, stability and activity goals all matter. Benefits, risks and the alternatives—including replacement—need individual discussion.
Joint preservation is not always the best route. When arthritis is advanced, knee replacement may be the more appropriate option.
Your questions
Which injection is best for me?
There is no single best injection for every knee. The diagnosis, evidence, medical history, previous response and your priorities guide the decision.
Are Arthrosamid and hydrogel separate options?
Arthrosamid is the specific hydrogel implant described on this page.
Can I combine or switch injections?
Tell your clinician exactly what you have received and when. Previous injections may affect eligibility and timing, especially for a permanent hydrogel implant. Do not assume treatments can be combined.
What should I expect after treatment?
You will need procedure-specific advice about activity, rehabilitation and review. Seek urgent medical advice for a hot, increasingly painful swollen joint or fever after an injection.
Can I find out the cost before deciding?
Ask the secretary or hospital for a written quotation covering the consultation, procedure and any associated charges. Confirm insurance cover before treatment.
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