Synvisc-One (hylan G-F 20) is an elastoviscous high molecular weight fluid containing hylan A and hylan B polymers produced from chicken combs. Hylans are derivatives of hyaluronan (sodium hyaluronate). Hylan G-F 20 is unique in that the hyaluronan is chemically cross linked. Hyaluronan is a long-chain polymer containing repeating disaccharide units of Na-glucuronate-N-acetylglucosamine.
INDICATIONS FOR USE
Synvisc-One is indicated for the treatment of pain in osteoarthritis (OA) of the knee in patients who have failed to respond adequately to conservative nonpharmacologic therapy and simple analgesics, e.g., acetaminophen.
Who is a candidate for Synvisc-One
Patients with knee osteoarthritis, who have tried diet, exercise and over-the-counter pain medication but still have pain, should talk to their doctor to see if Synvisc-One is right for them.
How Synvisc-One is administered
Synvisc-One is a single injection. It's a simple, in-office procedure that only takes a few minutes.
What you can expect following a Synvisc-One knee injection
Synvisc-One can provide up to six months of osteoarthritis knee pain relief. Everyone responds differently, but in a medical study* patients experienced relief starting one month after the injection.
After the injection, you can resume normal day-to-day activities, but you should avoid any strenuous activities for about 48 hours.
What are possible side effects?
- Do not administer to patients with known hypersensitivity (allergy) to hyaluronan (sodium hyaluronate) preparations.
- Do not inject Synvisc-One in the knees of patients having knee joint infections or skin diseases or infections in the area of theinjection site.
Synvisc may occur short-term pain, swelling at the injection site and / or the appearance of synovial exudate after injection. In some cases, exudation may be significant and cause more prolonged pain.
Important Safety Information
Before trying Synvisc-One or SYNVISC, tell your doctor if you are allergic to products from birds - such as feathers, eggs or poultry - or if your leg is swollen or infected. Synvisc-One and SYNVISC are only for injection into the knee, performed by a doctor or other qualified health care professional. Synvisc-One and SYNVISC have not been tested to show pain relief in joints other than the knee. Talk to your doctor before resuming strenuous weight-bearing activities after treatment. Synvisc-One and SYNVISC have not been tested in children, pregnant women or women who are nursing. You should tell your doctor if you think you are pregnant or if you are nursing a child. The side effects most commonly seen when Synvisc-One or SYNVISC is injected into the knee were pain, swelling and/or fluid buildup in or around the knee. Cases where the swelling is extensive or painful should be discussed with your doctor. Allergic reactions such as rash and hives have been reported rarely.