A single injection of polyacrylamide hydrogel into the knee joint, offering a non-surgical option for knee osteoarthritis pain when first-line treatments aren't giving enough relief.
Arthrosamid is a polyacrylamide hydrogel injected directly into the knee joint. Unlike steroid or standard hyaluronic acid injections, which are typically absorbed by the body over weeks, it integrates into the joint's soft tissue lining and is intended to provide longer-lasting cushioning and support for an osteoarthritic knee.
It's generally considered for patients with knee osteoarthritis whose pain is affecting daily life but who are not yet ready for knee replacement surgery, or are not suitable candidates for it, and for whom simpler measures such as physiotherapy, weight management, activity modification and standard pain relief haven't given enough benefit. It can also be a useful option for patients who want to delay surgery, or who have medical reasons that make surgery higher risk.
The injection is given in clinic under local anaesthetic, usually guided by ultrasound to ensure accurate placement within the joint. It typically takes around fifteen minutes, with no incision and no need for a general anaesthetic or hospital stay.
As with any joint injection, there's a small risk of infection, joint reaction or discomfort at the injection site. Whether it is an appropriate option, and how it fits alongside other treatments, is best assessed based on the severity and pattern of your knee osteoarthritis at consultation.