Synvisc-One for Younger, Active Patients With Osteoarthritis — SYNVISC-ONE  

Clinical Trial Summary

This study aims to study use of viscosupplementation as a treatment of pain for young individuals who are active. Typically viscosupplementation is considered an intervention for knee osteoarthritis often for older patients who are less active. Many young active patients can also develop knee osteoarthritis after trauma or surgery or for congenital reasons. Treatment of these patients commonly are steroid injections which have more biologically detrimental effects for cartilage compared to viscosupplementation Synvisc One injections which are a single injection will be used to determine effectiveness of reducing pain and maintaining an active healthy lifestyle for younger patients aged 30-50 years old.

This study will be an open label longitudinal cohort study with natural history over 3 years. Screening data will be reviewed to determine subject eligibility. Subjects who meet all inclusion criteria and none of the exclusion criteria will be entered into the study. Subjects enrolled in the cohort will have baseline functional testing performed including a motion gait analysis, 12 minute walk test, and 3-day accelerometer data. Subjects will receive a single 6 mL intra-articular injection of hylan G-F 20 in the target knee at baseline. All ongoing treatments will be monitored at 6 month intervals over the 3 year duration of the study. Patients can receive any other conservative treatments (e.g., oral medications, physical or other therapy, acupuncture, etc., except other injection treatments) and current treatments will be documented during each patient encounter. An initial injection of hylan G-F 20 will be injected in the symptomatic knee using a standard supine lateral approach using a 20 gauge needle. A face to face follow up visit will be carried out 6 months after first injection with additional face to face meetings every 6 months thereafter unless the subject requires an additional injection of hylan G-F 20. Hylan G-F 20 treatments can be administered up to three times each year during the study duration. After each injection, follow up measures will be carried out using secure e-mail or phone contact at 6 weeks, 12 weeks, 18 weeks after each in-office evaluation or injection. Follow up will consist of WOMAC, Lysholm score, and Tegner score. Patients may return for retreatment of hylan G-F 20 if symptoms recur after at least 4 months following their previous injection and they meet the inclusion criteria with pain levels of WOMAC A1, C8, C9, C10 and/or C23 equaling 2 or more. Patients requiring three injections of hylan G-F 20 in 4 months or less will be allowed to exit the cohort after their six-month follow up following the third injection. Otherwise, patients will be followed until they reach the 3 year follow up, or drop out for other injection treatments or surgical treatment. Therefore, patients would potentially be able to receive up to 9 injections during the 3 year study. ;

Study Design

Related Conditions & MeSH terms

• Osteoarthritis