Patient information: Hyaluronic acid injections for knee OA:
Hyaluronic acid injections, also known as viscos-supplementation, is a pain-relieving treatment
option for mild to moderate knee osteoarthritis (OA).
What is Hyaluronic Acid?
Hyaluronic acid is a naturally occurring substance found in the synovial fluid of joints. Injections
of hyaluronic acid are used to supplement the depleted natural levels in the knee joint affected
Why inject Hyaluronic Acid?
The goal of hyaluronic acid injections is to provide lubrication and cushioning to the knee joint,
reducing pain, improving joint function, and potentially delaying the need for more invasive
treatments like surgery.
How is it done?
The injections are typically administered by a healthcare professional, such as a Physiotherapist
in an outpatient setting. The procedure involves injecting the hyaluronic acid directly into the
knee joint using a fine needle. We use a ultrasound guided injection technique, which is more accurate and less painful.
The number of injections and the frequency of treatment can vary depending on the specific
product used and the severity of the knee OA. Typically, a course of treatment may consists of
one or a series of injections given over a few weeks or months, depending on the type
of hyaluronic acid.. We mainly use Durolane (Bioventus), which is a single long-acting injection for up to 26 weeks.
The effectiveness of hyaluronic acid injections can vary among individuals. While some patients
experience significant pain relief and improved joint function, others may not experience the
same level of benefit. It’s important to have realistic expectations and discuss potential
outcomes with your healthcare provider.
Common side effects may include temporary pain or swelling at the injection site. In rare cases,
infection or allergic reactions may occur. It’s essential to discuss any allergies or medical
conditions with your healthcare provider before undergoing the procedure.
Following the injections, it’s generally recommended to avoid strenuous activities involving the
knee joint for a 24-48 hours. Your healthcare provider will provide specific post-treatment